The following is a list of mental disorders as defined at any point by the Diagnostic and Statistical Manual of Mental Disorders (DSM) or the International Classification of Diseases (ICD). A mental disorder, also known as a mental illness, mental health condition, or psychiatric disorder, is characterized by a pattern of behavior or mental function that significantly impairs personal functioning or causes considerable distress.^[1]

The DSM, a classification and diagnostic guide published by the American Psychiatric Association, includes over 450 distinct definitions of mental disorders.^[2] Meanwhile, the ICD, published by the World Health Organization, stands as the international standard for categorizing all medical conditions, including sections on mental and behavioral disorders.^[3]

Revisions and updates are periodically made to the diagnostic criteria and descriptions in the DSM and ICD to reflect current understanding and consensus within the mental health field. The list includes conditions currently recognized as mental disorders according to these systems. There is ongoing debate among mental health professionals, including psychiatrists, about the definitions and criteria used to delineate mental disorders. There is particular concern over whether certain conditions should be classified as "mental illnesses" or might more accurately be described as neurological disorders or in other terms.^[4]

• Agoraphobia
• Generalized anxiety disorder
• Panic disorder
• Selective mutism
• Separation anxiety disorder
• Specific phobias
• Social anxiety disorder

• Dissociative identity disorder
• Dissociative amnesia (formerly psychogenic amnesia)
• Depersonalization-derealization disorder
• Dissociative amnesia with dissociative fugue
• Dissociative neurological symptom disorder (this includes Psychogenic non-epileptic seizures)
• Other specified dissociative disorder (OSDD)
• Unspecified dissociative disorder
• Ganser syndrome

• Reactive attachment disorder
• Disinhibited social engagement disorder
• Post-traumatic stress disorder (PTSD)
• Post-traumatic embitterment disorder (PTED)
• Acute stress disorder
• Adjustment disorder
• Complex post-traumatic stress disorder (C-PTSD)
• Prolonged grief disorder

• Intellectual disability
• Language disorder
• Sensory processing disorder
• Speech sound disorder
• Stuttering
• Aphasia
• Social communication disorder
• Pervasive developmental disorder
• Auditory processing disorder
• Communication disorder
• Autism spectrum disorder (formally a category that included Asperger syndrome, Classic autism and Rett syndrome)
• Attention deficit hyperactivity disorder (ADHD)
• Developmental coordination disorder
• Tourette syndrome
• Down syndrome
• Tic disorder
• Dyslexia
• Dyscalculia
• Dysgraphia
• Nonverbal learning Disorder (NVLD, NLD)

• Insomnia (including chronic insomnia and short-term insomnia)
• Hypersomnia
• Idiopathic hypersomnia
• Kleine–Levin syndrome
• Insufficient sleep syndrome
• Narcolepsy
• Restless legs syndrome
• Sleep apnea
• Night terrors (sleep terrors)
• Exploding head syndrome

• Delirium
• Dementia
• Traumatic brain injury
• HIV-associated neurocognitive disorder (HAND)
• Amnesia
• Chronic traumatic encephalopathy
• Agnosia

• Voyeuristic disorder
• Exhibitionistic disorder
• Frotteuristic disorder
• Pedophilia
• Compulsive sexual behaviour disorder
• Erotic target location error
• Sexual masochism disorder
• Sexual sadism disorder
• Fetishistic disorder
• Transvestic disorder
• Other specified paraphilic disorder

• Hypochondriasis
• Cyberchondria
• Somatization disorder
• Conversion disorder (Functional Neurological Symptom Disorder)
• Factitious disorder imposed on self (munchausen syndrome)
• Factitious disorder imposed on another (munchausen by proxy)
• Pain disorder
• Medically unexplained physical symptoms

• Delayed ejaculation
• Erectile dysfunction
• Anorgasmia
• Vaginismus
• Male hypoactive sexual desire disorder
• Female sexual arousal disorder
• Persistent genital arousal disorder
• Hypoactive sexual desire disorder
• Sexual arousal disorder
• Premature ejaculation
• Dyspareunia
• Sexual dysfunction

• Enuresis (Involuntary urination)
• Nocturnal enuresis
• Encopresis (Involuntary defecation)

• Pica (disorder)
• Rumination syndrome
• Avoidant/restrictive food intake disorder
• Anorexia nervosa
• Binge eating disorder
• Bulimia nervosa
• Other specified feeding or eating disorder (OSFED)
• Purging disorder
• Diabulimia
• Night eating syndrome
• Orthorexia nervosa
• Atypical anorexia nervosa

• Intermittent explosive disorder
• Oppositional defiant disorder
• Conduct disorder
• Antisocial personality disorder
• Pyromania
• Kleptomania
• Disruptive mood dysregulation disorder

• Obsessive–compulsive disorder (OCD)
• Body dysmorphic disorder
• Body integrity dysphoria
• Compulsive hoarding
• Trichotillomania
• Excoriation disorder (Skin picking disorder)
• Body-focused repetitive behavior disorder
• Olfactory reference syndrome
• Phantom limb syndrome
• Primarily obsessional obsessive-compulsive disorder
• Hoarding disorder

• Delusional disorder
• Schizophrenia
• Schizoaffective disorder
• Schizophreniform disorder
• Brief psychotic disorder
• Psychosis
• Paraphrenia

• Gender dysphoria (also known as gender integrity disorder or gender incongruence, there are different categorizations for children and non-children in the ICD-11)
• Medication-induced movement disorders and other adverse effects of medication
• Catatonia
• Culture-bound syndrome

• List of neurological conditions and disorders