Schizophrenia
Topic OverviewWhat is schizophrenia?Schizophrenia is an illness
that can affect your ability to think clearly, manage your emotions, and interact with others. It affects each person differently. The way other people react to schizophrenia can make a
difference in how schizophrenia affects you. It can make it easier or harder
for you to cope with the illness. Most people who have schizophrenia: -
Hear and sometimes see things that aren't there (hallucinations).
- Often believe some things that aren't true (delusions).
- May think that some people are trying
to harm them (paranoia).
With treatment, they may come to understand
that these experiences aren't real but are a problem with how their brains
work. Some people with schizophrenia have paranoid thinking, which causes them to have frightening
thoughts, to believe that people or forces are trying to harm them, and to hear
voices. Some people think that schizophrenia is the same as a "split
personality" (dissociative identity disorder), but that is a
different mental health problem. Living with schizophrenia can
cause many challenges. It's a difficult disease. It changes your life and the lives of your
family. But you can live a full and meaningful life if: - You are willing to work at helping yourself.
- You
get professional help.
- You have the support and understanding of your
family.
What causes schizophrenia? Experts don't know
what causes schizophrenia. It may have different causes for different people.
- In some people, brain chemistry and brain structure aren't normal.
- Family
history may play a role.
- Problems that harm a baby's brain during pregnancy may help cause it.
It is not caused by
anything you did, by personal weakness, or by the way your parents raised you.
What are the symptoms?Symptoms of schizophrenia
include: - Negative symptoms. "Negative" doesn't
mean "bad." Negative symptoms are things that are "lost" from your personality
or how you experience life. You may:
- Not care about things.
- Have no interest or drive to do things.
- Not
take care of yourself, such as not bathing or not eating regularly.
- Find it hard to say how you feel.
- Become angry with strangers for no
reason and react to others in other harmful ways.
- Positive symptoms. "Positive" doesn't mean "good." Positive
symptoms are things "added" or "new" to your personality or how you experience
life. They include:
- Hallucinations.
- Delusions.
- Thoughts and speech that are confusing.
- Cognitive symptoms. These symptoms have to do with how you think. They often aren't
obvious to you or others. They can include:
- Memory loss.
- Not being able to understand things well enough to make decisions.
- Having trouble talking clearly to others.
Symptoms usually start when you are a
teen or a young adult, but they may start later in life. They may appear
suddenly or may develop slowly. You may not be aware of your symptoms. Negative symptoms usually appear first. They may be hard to recognize as
schizophrenia, because they are similar to symptoms of other problems, such as
depression. Positive symptoms can start days, months,
or years after the negative symptoms. Early signs of
schizophrenia may include doing worse in school, thinking that people are
trying to harm you, or having changes in your personality, such as not wanting
to see people. These signs don't mean you have schizophrenia. But
if you notice these signs, see a doctor. How is schizophrenia diagnosed?Your doctor will
ask you questions about your health and about any odd experiences you may have
had, such as hearing voices or having confusing thoughts. You will have a
physical exam. Your doctor also may suggest tests, such as blood tests or
imaging tests, to see if your symptoms may be caused
by another health problem. How is it treated? Medicines
help your symptoms, and counseling and therapy help you change how you think
about things and deal with the illness. Treatment may last a long time. When you have your symptoms under control, you are in recovery. Recovery
usually is a lifelong process. In the recovery process, you learn to cope with
your symptoms and challenges, find and meet your goals, and get the support
you need. Your recovery depends upon a partnership between you, your doctors,
and others who are important in your life. People who have schizophrenia often stop
treatment. This may be because they don't understand that they have an illness
or because the medicines cause side effects. When treatment stops, symptoms
usually come back (relapse) or get worse. A relapse might happen right after
treatment is stopped or months later. A later relapse makes it hard to see that
stopping the medicine was the cause. During a relapse, some people who have schizophrenia may need to spend time
in a hospital. How can family and friends help?Having
schizophrenia can be a scary experience, and knowing that someone you love has
this illness changes your life. Show love, and learn as much as you can about
the illness. Understand that the behavior you may see is caused by the illness
and is not the person you love. If you think that someone you love has
schizophrenia, help that person get to a doctor. The sooner the illness is
diagnosed and the person begins treatment, the more successful treatment and
recovery may be. You can help by talking to your loved one and
helping him or her continue treatment. You also can help your loved one deal
with fear and other feelings about the illness and with the negative attitudes
that some people have toward schizophrenia. Frequently Asked QuestionsLearning about schizophrenia: | | Being diagnosed: | | Getting treatment: | | Living with schizophrenia: | |
Cause Experts don't know what causes
schizophrenia. It may have different causes for
different people. - Genetics: Your chances of getting schizophrenia are greater if
your parent, brother, or sister has it. But
most people who have a family member with schizophrenia don't get it.
- Brain chemistry and structure: It's possible that
neurotransmitters, which send messages between parts
of the brain, don't work the right way in people who have
schizophrenia.
- Problems during pregnancy: Schizophrenia may be related to
problems during the mother's pregnancy that can harm a baby's developing brain and
nervous system. These
problems include poor nutrition or a
viral infection during pregnancy.
Schizophrenia is not caused by anything you did, by
personal weakness or bad choices, or by the way your parents raised you. SymptomsThe symptoms of schizophrenia can be negative, positive, or
cognitive. Negative symptoms "Negative" doesn't mean
"bad." Negative symptoms are things that are "lost" from your personality or
how you experience life. You may: - Find little or no pleasure in life. You may
not enjoy things you once enjoyed, such as playing sports or video games or
visiting with friends. This is a common symptom of
schizophrenia.
- Feel like you have no emotions. You may not smile or
frown, make eye contact, or use other facial cues that show how you feel.
- Have a hard time focusing or paying attention. You may not
understand how to use information well, so you may feel confused. You may not have
complete thoughts.
- Not be interested in succeeding or meeting goals. Many people
with schizophrenia don't do well at work or in school.
- Not take
care of yourself. You may not bother to wash, do laundry, eat on a regular
basis, or clean your living space.
Positive symptoms"Positive" doesn't mean
"good." Positive symptoms are things "added" or "new" to your personality or
how you experience life because of schizophrenia. You may: - Have hallucinations. Most people with schizophrenia hear noises or voices that aren't there. Some people with the illness also may
see, taste, touch, or smell things that aren't there.
- Have
delusions, which are ideas that aren't true. For
example, you may think that you are a powerful person or that the police or demons
want to harm you or cause problems for you.
- Act oddly. You may
become very excited or angry with other people. You may have odd body
movements, such as often rocking back and forth or making
faces.
- Show emotions that don't fit the situation. For example, you
may smile when talking about sad topics or laugh at the wrong time.
- Not be able to keep your thoughts straight and not make sense
to others when you talk. For example, when someone asks you a question, you may
give an answer that doesn't make sense, not be able to say much, or only give
one-word answers.
Cognitive and other symptomsOther symptoms
include: - Cognitive symptoms. These symptoms affect how you think. They
include memory loss and not being able to understand things well enough to make
decisions. Cognitive symptoms often aren't obvious to you or others.
- Specific behavior changes.Some symptoms of schizophrenia may cause certain behaviors, such as being afraid
with little reason, standing in awkward positions for a long time, or making up
words.
What HappensSymptoms of
schizophrenia usually start in the late teens to
mid-20s for men and the late 20s to 30s for women.
The symptoms may start suddenly or happen gradually. Childhood schizophrenia is rare. There are four stages of schizophrenia: prodromal phase, active or acute phase, remission, and relapse. Prodromal phaseSchizophrenia usually starts with this phase, when symptoms are vague and easy to miss. They are often the same as symptoms of other mental health problems, such as depression or other
anxiety disorders. They may not seem unusual for teens or young adults. In fact, schizophrenia is rarely diagnosed at this time. Symptoms are sometimes triggered by stress or changes, such as going away to school, starting to use drugs or alcohol, or going through a severe illness or a death in the family. These first symptoms often include being withdrawn, outbursts of anger, or odd behavior. For more information, see Symptoms. This phase can last for days, months, or years. Active, or acute, phaseAt some point you start
to have
symptoms such as
hallucinations, delusions, or confusing thoughts and speech. These symptoms may appear suddenly or
slowly over time. They can be severe and can cause a
psychotic episode, which means you can't tell the
difference between what is real and what isn't real.
You may need to go to the hospital. You probably won't be able to make
many decisions about your care. This phase usually lasts 4 to 8 weeks. This is when schizophrenia
usually is diagnosed. Remission and relapseAfter an active phase, symptoms get better, especially
with treatment, and life may be more "normal." This is called
remission. But symptoms may get worse again, which is
called a
relapse. You may have this cycle of symptoms that get
severe and then improve. In each cycle,
symptoms such as hallucinations and delusions may become less intense, but other symptoms, such as feeling less interested in caring for yourself, may get worse. You may have few or
many cycles before you are able to stay in remission. Within 5 to 10 years, you
may develop a unique
pattern of illness that often stays the same
throughout your life. It also is possible that you will have fewer relapses as
you get older and may even not have symptoms. Tips for avoiding relapse- Learn how to recognize the
first signs of relapse, such as not wanting to do
things with others, and have a plan to deal with it and get help right
away.
- If you need help deciding whether to see your doctor, read
about some of the reasons people don't get help and how to
overcome them.
- Take your medicine, even if you're feeling better. This makes a
relapse less likely.Learn some ways to help you
remember to take your medicine.
- If side effects
are making your life hard, talk with your doctor to see whether you can try a
different medicine.
- Stay in counseling or therapy, and continue with your recovery
plan.
Special concernsWatch these areas for
problems: - Thoughts of suicide or thoughts about harming yourself or others. If you think about these
things, call your doctor or 911 right away.
Tell family and friends how to recognize the
warning signs of suicide, such as threatening to harm yourself and being preoccupied with death or suicide, and
warning signs of violence toward others, such as
thinking or talking about harming someone or becoming aggressive.
- Social concerns, such as other
people's attitudes. People who don't understand schizophrenia or other mental
health problems may treat you differently. Find family and friends who want to
support you and help you with relationships. Help them understand
schizophrenia.
- Smoking. Many people who have
schizophrenia smoke cigarettes. This may be because smoking helps with some of
the symptoms. But smoking makes other illnesses, such
as cancer and heart disease, more likely.
- Having a baby. If you
have schizophrenia and want to have a baby, talk to your doctor. Medicines
that you take for schizophrenia can cause birth defects, and not taking your
medicine puts you at risk for a relapse. Your doctor can help you plan your
pregnancy so there will be as little risk as possible to you and your
baby.
- Substance abuse. Many people who have schizophrenia
abuse alcohol or drugs. When you have schizophrenia and a substance abuse
problem, it's called a
dual diagnosis. Talk with your doctor
or another trusted person about getting help for substance
abuse.
- Other health problems. Obesity,
substance abuse,
type 2 diabetes, and heart and lung problems may occur along with schizophrenia.
What Increases Your RiskSchizophrenia
is a complex illness. Experts don't know what causes it or why some people get
it and others don't. But some things increase your chances of getting it. These are called risk factors. You
may be at risk for schizophrenia if: - Your mother, father, brother, or sister has
schizophrenia.
- Your mother had certain problems while she
was pregnant with you. For example, if your mother didn't get enough to eat
(malnutrition), had a
viral infection, or took certain medicines for
high blood pressure, you may be at increased
risk.
- You or a family member have another
disorder that is like schizophrenia. An example of
this is a delusional disorder, which means you believe things that you know are false.
- You have
a problem with
alcohol or drugs. Experts
don't know whether substance abuse triggers schizophrenia or whether schizophrenia makes a person more likely to have this problem.
When to Call a DoctorCall 911 or other emergency services if you (or a loved one with schizophrenia): - Are thinking about suicide or are
threatening suicide.
- Hear voices that tell you to hurt yourself or someone else or to
do something illegal, such as destroy property or steal.
- Notice
warning signs of violence toward others, such as
thinking or talking about harming someone or becoming aggressive.
Call a doctor if you (or a loved one with schizophrenia): - Have a sudden change in behavior, such as
refusing to eat because you think someone has poisoned your
food.
- Have experiences that don't usually occur, such as hearing
someone calling your name when no one is there.
- Have a hard time
taking care of basic needs, such as grooming, or become confused doing simple
chores or tasks.
- Show signs of
schizophrenia, such as talking to people who aren't present or believing
things that you know are false.
- Show the
first signs of relapse, such as finding it hard to
focus or withdrawing from other people.
If you are worried that you or a loved one may have schizophrenia but need help
deciding whether to see your doctor, read about
some of the reasons people don't get help and how to overcome them. Who can treat schizophrenia?Health professionals
who can help diagnose schizophrenia or who may work together with other health
professionals to treat schizophrenia include: Exams and TestsYour doctor will ask you questions about your
medical history and your
mental health and about any odd experiences you may
have had, such as hearing voices or having confusing thoughts. You also will
have a
physical exam. Your doctor also may
suggest tests to rule out
other conditions with similar symptoms or to diagnose
other schizophrenia disorders. These tests may include
blood tests and a
CT scan or
MRI. The CT scan or MRI will check the size,
structure, and function of your brain. If your doctor thinks you are
depressed or are thinking about suicide, a
suicide assessment also may be done. Schizophrenia is diagnosed when:footnote 1 - You have had at least two of the following symptoms and they lasted
for at least 1 month. One of your symptoms must be hallucinations, delusions, or disorganized speech.
- Hallucinations
- Delusions
- Disorganized speech, such as not
making sense to others when you talk
- Very disorganized or
catatonic behavior, such as sitting or standing in
unusual positions for a long time
- Negative symptoms,
such as having no emotion, not being able to feel pleasure, or having a hard
time focusing
- You have had milder symptoms, such as odd beliefs or confusion, for at least 6 months.
- You have problems doing your job right or dealing
with other people or problems in other areas of your life.
- Your symptoms aren't caused by other mental or physical health
problems, a medicine you're taking, or
substance abuse problems.
Treatment OverviewFinding out that you have
schizophrenia can be scary and hard to deal with. But
you can treat it. The goals of treatment and recovery are to: - Reduce or stop symptoms.
- Reduce the number of
relapses.
- Develop a personal plan for your
recovery by setting and meeting goals for home, work, and relationships.
Medicines help your symptoms. And counseling and therapy help you
change how you think about things and deal with the illness. If medicine and therapy aren't
helping you, your doctor may suggest
electroconvulsive therapy (ECT). In this procedure,
your doctor uses electricity to create a brief and mild seizure. This may
change your brain chemistry and help your symptoms. If you struggle with
alcohol, drugs, or tobacco or have other mental health
problems, such as
depression, you need to treat these problems too.
Treatment may last
a long time, and the need to follow a recovery plan usually lasts for your
lifetime. Your treatment and recovery plan may change as your experience of
schizophrenia and your life change. Most people with
schizophrenia qualify for health care programs such as Medicare or Medicaid. To
find out whether you qualify, check with your local health and welfare agency.
When schizophrenia is not treated, the risks are higher for suicide, a hospital stay, and other problems. Early treatment called coordinated specialty care (CSC) may help a person who is having his or her first episode of psychotic thoughts. Ask your doctor about CSC. MedicinesMedicines are the treatment
that works best for schizophrenia, and you may be taking more than one at a time. They may be used for
positive or
negative symptoms, but they don't work as well for
negative symptoms as they do for positive symptoms. It may take time to find
which medicines are best for you. This may be frustrating. Getting support from
your family, your friends, and a community-based rehabilitation program is
helpful, especially while you and your doctor are trying to find the best
medicines. It also may help to speak with and get support from others who have
had trouble finding the right medicines. If you stop taking your
medicines, you may have a relapse. Don't stop taking your medicines until you
talk with your doctor. If you and your health care team decide you should stop
using medicine, you will need to be checked on a regular basis. Medicine choicesMedicines used most often to
treat schizophrenia include: These medicines often are used along with
the medicines listed above: Side effectsBecause of side
effects or the risk of side effects, you may be tempted to stop using your
medicine. But if you stop using medicine, the symptoms of schizophrenia may
come back or get worse. If you have any concerns about side
effects, talk to your doctor. He or she will work with you. Your doctor may
give you a smaller dose of the antipsychotic medicine, have you try another
antipsychotic medicine, or give you another medicine to treat the side effect.
Some side effects of antipsychotic
medicines can be serious. - Neuroleptic malignant syndrome is a rare but life-threatening side effect of antipsychotics.
The first signs usually include a fever between
102°F (38.9°C) and
103°F (39.4°C), a fast or
irregular heartbeat, rapid breathing, and severe sweating.
- Tardive dyskinesia is body movement that you can't
control.
- Type 2 diabetes might develop as a result of weight gain caused by some antipsychotics. Some antipsychotics may also increase insulin resistance.
You may need regular blood tests to check for side effects. Children, teens, and older adults
may need to have blood tests more often than other people. Counseling and TherapyCounseling and therapy are
important parts of treatment. You will work with a mental health professional
such as a psychologist, a licensed professional counselor, a clinical social
worker, or a psychiatrist. Find a therapist you trust and feel
comfortable with. A good therapist not only provides help but gives you support
and encouragement. If you don't feel good about working with one doctor or
therapist, try another one. Here are some types of therapy that
may help: - Cognitive-behavioral therapy helps you to:
- Change the way you think about things.
- Understand why it's important to prevent a relapse and take steps to
do so.
- Counseling can take place one-on-one or
in a group setting.
- It helps you improve your relationships, deal
with your symptoms, and meet your goals.
- Group counseling also helps you make friends and learn
social skills.
- Family therapy is a type of counseling that helps you and your family work out problems when they occur.
- It usually
includes education about schizophrenia and its treatment.
- It's important, because your family can play a large role in supporting you if you
have schizophrenia.
RecoveryWhen you have schizophrenia, you need
more than medicines and counseling to move forward with your life. You need to
partner with your health care team to find and meet your personal goals. This
life-long partnering is known as recovery. Recovery isn't the
same as being cured, and it doesn't mean that you will be symptom-free. It is being
able to live a full life and enjoy favorite activities with as little trouble
as possible from your symptoms. Recovery may help you manage your symptoms so
that you can be an active member of your community. Education,
support, and training in social and job skills all are important parts of your
treatment and recovery. For example: - Learning about schizophrenia can
improve the quality of your life and the lives of those who care about
you.
- Job training may help you find a job that interests
you and that you can be successful in. This can help with finances and
self-esteem.
- Social skills training can help you
develop life skills such as learning to communicate, managing frustration, and
coping. It may include
cognitive enhancement therapy, which may help you
improve how well you understand and deal with other people.
- Case management and assertive community treatment can help you organize the
many different parts of treatment and recovery. You receive this kind of help
at your home. You don't have to go anywhere special to get it.
- Support groups give you the chance to talk with people
who are going through the same things you are.
It may be hard to understand
and accept that you have an illness, and it's easy to become discouraged. You
can help yourself by focusing on your recovery goals and learning to see
schizophrenia as one part of your life, not your entire life. Make managing
schizophrenia well one of the many successes in your life. SupportYou have schizophrenia, but like other
people, you have wishes and goals for your life. You most likely want healthy
relationships with your partner, family, and friends. You may want a job that
gives you a sense of self-worth. Your family and community can
support you and help you meet your goals. - Your family can help you get the right
treatment, deal with your symptoms, and get along in your community.
Family therapy is an important part of
this.
- Social support and support groups give you the chance
to talk with people who are going through the same things you are.
- Case management and assertive community treatment can
help you deal with the many different parts of treatment and recovery. If you
feel overwhelmed, ask your doctor or therapist about these programs.
- Your local or state health department may have programs to help
you. The National Alliance on Mental Illness (NAMI) provides contact
information for support organizations nationwide. For more information, go to
www.nami.org.
RelapseIf your symptoms come back, it's called a
relapse. Anyone with schizophrenia can have a relapse,
but it may happen much more often when you don't take your medicine. You can help prevent a
relapse by taking your medicine, going to your counseling sessions, being
active in your own recovery, and not drinking alcohol or using illegal drugs.
If you are having trouble taking your medicine
or feel that you don't need to, talk to your doctor or another trusted person. Your
doctor may be able to change the medicine or how much you take. A partner or
spouse may help you find ways to remember to take the medicine. A healthy lifestyleThe symptoms of schizophrenia
can make it easy to forget some of the basics of good health. But it's
important to try to have a healthy lifestyle. Here are some
things to do: - Don't abuse drugs or alcohol. Having a
substance abuse problem makes treating schizophrenia
harder. If you have a substance abuse problem, you need to
treat both problems to help your recovery.
- Exercise and be active. Exercise can help relieve anxiety,
depression, and stress. Exercise and activity also make other diseases,
such as heart disease or diabetes, less likely.
- Relieve stress. Reducing stress may mean fewer
relapses.
- Get enough sleep. This is very important. Sleep can
help your mood and make you feel less stressed.
- Eat a balanced diet. This helps your body deal with tension and stress.
- Stop smoking, if you smoke. Smoking increases the risk for
other diseases, such as cancer and heart disease. For information on how to
stop smoking, see the topic
Quitting Smoking.
For Family and FriendsSchizophrenia affects everyone around the person who
has the illness. It can be hard to watch a family member or friend develop
symptoms and perhaps act in very different ways. You
may feel helpless, but you play an important role in the life and treatment of
a loved one who has schizophrenia. What you can doYou can also help the person with good health habits, like getting enough sleep and avoiding alcohol and drugs.
Sometimes people who have schizophrenia are too sick to
seek treatment on their own. If the symptoms are severe, you may have to force
the person to get treatment. Talk with your health care providers and/or local
law enforcement officials about the laws and procedures in your area for
getting treatment in this situation. If you have this information before you
need it, it will reduce your fears and concerns and may make it easier for you.
Emergency help Some people who have schizophrenia
may become aggressive or violent at times. Call 911 or other emergency help if you
notice: Helping yourselfSupporting or caring for someone
who has schizophrenia isn't easy. Finding your own support can help you deal
with the illness and the sense of loss you may feel. - Take care of yourself. Do things you
enjoy, such as seeing family or going to movies.
- Don't feel that you need to do everything possible to help a loved
one who has schizophrenia. Remember that you need to respect the wishes and
choices of your loved one, unless those wishes and choices are dangerous.
Everyone learns from a wrong choice or mistake. Recovery may be faster if your
loved one believes that family members trust him or her with decision
making.
- Don't do it alone. Ask others to help you, or join a support
group. The more support you have, the more help you can give.
- Get
help from a local organization. Your city or state may have programs to help
you. Ask at your local or state health department. The National Alliance on
Mental Illness (NAMI) provides contact information for support organizations
nationwide. For more information, go to www.nami.org.
For more information, see the topic Caregiver Tips. Other Places To Get HelpOrganizationsNational Alliance on Mental Illness (NAMI) (U.S.) www.nami.org National Institute of Mental Health (NIMH) (U.S.) www.nimh.nih.gov ReferencesCitations- American Psychiatric Association (2013). Schizophrenia spectrum and other psychotic disorders. In Diagnostic and Statistical Manual of Mental Disorders, 5th ed., pp. 87-122. Washington, DC: American Psychiatric Association.
Other Works Consulted- American Psychiatric Association (2013). Schizophrenia spectrum and other psychotic disorders. In Diagnostic and Statistical Manual of Mental Disorders, 5th ed., pp. 87-122. Washington, DC: American Psychiatric Association.
- Lyness JM (2016). Psychiatric disorders in medical practice. In L Goldman, A Schafer, eds., Goldman-Cecil Medicine, 25th ed., vol. 2, pp. 2346-2356. Philadelphia: Saunders.
- Sadock BJ, Sadock VA (2010). Schizophrenia. In Kaplan and Sadock's Pocket Handbook of Clinical Psychiatry, 5th ed., pp. 143-158. Philadelphia: Lippincott Williams and Wilkins.
- Sadock BJ, Sadock VA (2010). Schizophreniform, schizoaffective, delusional, and other psychotic disorders. In Kaplan and Sadock's Pocket Handbook of Clinical Psychiatry, 5th ed., pp. 159-174. Philadelphia: Lippincott Williams and Wilkins.
- Vannice GK (2012). Medical nutrition therapy for psychiatric conditions. In LK Mahan et al., eds., Krause's Food and the Nutrition Care Process, 13th ed., pp. 956-969. St Louis: Saunders.
- Walkup J, et al. (2009). Practice parameter on the use of psychotropic medication in children and adolescents. Journal of the American Academy of Child and Adolescent Psychiatry, 48(9): 961-973. Also available online: http://www.aacap.org/galleries/PracticeParameters/JAACAP%20Psychotropic%20Meds%202009.pdf.
CreditsByHealthwise Staff Primary Medical ReviewerKathleen Romito, MD - Family Medicine Martin J. Gabica, MD - Family Medicine E. Gregory Thompson, MD - Internal Medicine Specialist Medical ReviewerChristine R. Maldonado, PhD - Behavioral Health Current as of:
May 3, 2017 American Psychiatric Association (2013). Schizophrenia spectrum and other psychotic disorders. In Diagnostic and Statistical Manual of Mental Disorders, 5th ed., pp. 87-122. Washington, DC: American Psychiatric Association. Last modified on: 8 September 2017
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