Look up disorder in Wiktionary, the free dictionary. Disorder may refer to randomness, a lack of intelligible pattern, or: Disorder (medicine), a functional...

A mental disorder, also referred to as a mental illness, a mental health condition, or a psychiatric disability, is a behavioral or mental pattern that...

Bipolar disorder, previously known as manic depression, is a mental disorder characterized by periods of depression and periods of abnormally elevated...

Autism, also called autism spectrum disorder (ASD) or autism spectrum condition (ASC), is a neurodevelopmental disorder characterized by symptoms of deficient...

Personality disorders (PD) are a class of mental disorders characterized by enduring maladaptive patterns of behavior, cognition, and inner experience...

Conversion disorder (CD), or functional neurologic symptom disorder (FNsD), is a functional disorder that causes abnormal sensory experiences and movement...

Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterised by executive dysfunction occasioning symptoms of inattention...

A genetic disorder is a health problem caused by one or more abnormalities in the genome. It can be caused by a mutation in a single gene (monogenic) or...

An eating disorder is a mental disorder defined by abnormal eating behaviors that adversely affect a person's physical or mental health. These behaviors...

Borderline personality disorder (BPD), also known as emotionally unstable personality disorder (EUPD), is a personality disorder characterized by a pervasive...

Schizoaffective disorder is a mental disorder characterized by symptoms of both schizophrenia (psychosis) and mood disorder - either bipolar disorder or depression...

Anxiety disorders are a group of mental disorders characterized by significant and uncontrollable feelings of anxiety and fear such that a person's social...

Major depressive disorder (MDD), also known as clinical depression, is a mental disorder characterized by at least two weeks of pervasive low mood, low...

A thought disorder (TD) is a disturbance in cognition which affects language, thought and communication. Psychiatric and psychological glossaries in 2015...

Conduct disorder (CD) is a mental disorder diagnosed in childhood or adolescence that presents itself through a repetitive and persistent pattern of behavior...

Obsessive–compulsive disorder (OCD) is a mental and behavioral disorder in which an individual has intrusive thoughts (an obsession) and feels the need...

Depersonalization-derealization disorder (DPDR, DDD) is a mental disorder in which the person has persistent or recurrent feelings of depersonalization...

Neurodevelopmental disorders are a group of mental conditions affecting the development of the nervous system, which includes the brain and spinal cord...

Narcissistic personality disorder (NPD) is a personality disorder characterized by a life-long pattern of exaggerated feelings of self-importance, an excessive...

Hoarding disorder (HD) or Plyushkin's disorder, is a mental disorder characterised by persistent difficulty in parting with possessions and engaging in...

Post-traumatic stress disorder (PTSD) is a mental and behavioral disorder that develops from experiencing a traumatic event, such as sexual assault, warfare...

Dissociative identity disorder (DID), previously known as multiple personality disorder, is one of multiple dissociative disorders in the DSM-5, DSM-5-TR...

are not food. It is classified as an eating disorder but can also be the result of an existing mental disorder. The ingested or craved substance may be biological...

Panic disorder is a mental and behavioral disorder, specifically an anxiety disorder characterized by reoccurring unexpected panic attacks. Panic attacks...

A mood disorder, also known as an affective disorder, is any of a group of conditions of mental and behavioral disorder where the main underlying characteristic...

factitious in Wiktionary, the free dictionary. A factitious disorder is a mental disorder in which a person, without a malingering motive, acts as if...

Tic disorders are defined in the Diagnostic and Statistical Manual of Mental Disorders (DSM) based on type (motor or phonic) and duration of tics (sudden...

Speech disorders, impairments, or impediments, are a type of communication disorder in which normal speech is disrupted. This can mean fluency disorders like...

Delusional disorder, traditionally synonymous with paranoia, is a mental illness in which a person has delusions, but with no accompanying prominent hallucinations...

A sleep disorder, or somnipathy, is a medical disorder of an individual's sleep patterns. Some sleep disorders are severe enough to interfere with normal...