To determine a diagnosis and check for any related complications, you may have:
- A physical exam. Your doctor will try to rule out physical problems that could cause your symptoms.
- Lab tests. These may include a check of your thyroid function or a screening for alcohol and drugs, for example.
- A psychological evaluation. A doctor or mental health provider talks to you about your symptoms, thoughts, feelings and behavior patterns. You may be asked to fill out a questionnaire to help answer these questions.
Determining which mental illness you have
Sometimes it's difficult to find out which mental illness may be causing your symptoms. But taking the time and effort to get an accurate diagnosis will help determine the appropriate treatment.
The defining symptoms for each mental illness are detailed in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), published by the American Psychiatric Association. This manual is used by mental health providers to diagnose mental conditions and by insurance companies to reimburse for treatment.
Classes of mental illness
The main classes of mental illness are:
May 03, 2014
- Neurodevelopmental disorders. This class covers a wide range of problems that usually begin in infancy, childhood or the teenage years. Examples include autism spectrum disorder, attention-deficit/hyperactivity disorder (ADHD) and learning disorders.
- Schizophrenia spectrum and other psychotic disorders. Psychotic disorders cause detachment from reality (delusions, paranoia and hallucinations). The most notable example is schizophrenia, although other classes of disorders can be associated with detachment from reality at times.
- Bipolar and related disorders. This class includes disorders with alternating episodes of mania — periods of excessive activity, energy and excitement — and depression.
- Depressive disorders. These include disorders that affect how you feel emotionally, such as the level of sadness and happiness. Examples include major depressive disorder and premenstrual dysphoric disorder.
- Anxiety disorders. Anxiety is an emotion characterized by the anticipation of future danger or misfortune, accompanied by feeling ill at ease. This class includes generalized anxiety disorder, panic disorder and phobias.
- Obsessive-compulsive and related disorders. These disorders involve preoccupations or obsessions and repetitive thoughts and actions. Examples include obsessive-compulsive disorder, hoarding and hair-pulling disorder (trichotillomania).
- Trauma- and stressor-related disorders. These are adjustment disorders in which a person has trouble coping during or after a stressful life event. Examples include post-traumatic stress disorder (PTSD) and acute stress disorder.
- Dissociative disorders. These are disorders in which your sense of self is disrupted, such as with dissociative identity disorder and dissociative amnesia.
- Somatic symptom and related disorders. A person with one of these disorders may have physical symptoms with no clear medical cause, but the disorders are associated with significant distress and impairment. The disorders include somatic symptom disorder (previously known as hypochondriasis) and factitious disorder.
- Feeding and eating disorders. These disorders include disturbances related to eating, such as anorexia nervosa and binge-eating disorder.
- Elimination disorders. These disorders relate to the inappropriate elimination of urine or stool by accident or on purpose. Bedwetting (enuresis) is an example.
- Sleep-wake disorders. These are disorders of sleep severe enough to require clinical attention, such as insomnia, sleep apnea and restless legs syndrome.
- Sexual dysfunctions. These include disorders of sexual response, such as premature ejaculation and female orgasmic disorder.
- Gender dysphoria. This refers to the distress that accompanies a person's stated desire to be another gender.
- Disruptive, impulse-control and conduct disorders. These disorders include problems with emotional and behavioral self-control, such as kleptomania or intermittent explosive disorder.
- Substance-related and addictive disorders. These include problems associated with the use of alcohol, caffeine, tobacco and drugs. This class also includes gambling disorder.
- Neurocognitive disorders. Neurocognitive disorders affect your ability to think and reason. This class includes delirium, as well as neurocognitive disorders due to conditions or diseases such as traumatic brain injury or Alzheimer's disease.
- Personality disorders. A personality disorder involves a lasting pattern of emotional instability and unhealthy behavior that causes problems in your life and relationships. Examples include borderline personality disorder and antisocial personality disorder.
- Paraphilic disorders. These disorders include sexual interest that causes personal distress or impairment or causes potential or actual harm to another person. Examples are sexual sadism, voyeuristic disorder and pedophilic disorder.
- Other mental disorders. This class includes mental disorders that are due to other medical conditions or that don't meet the full criteria for one of the above disorders.
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