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.

The DSM, a classification and diagnostic guide published by the American Psychiatric Association, includes over 450 distinct definitions of mental disorders. 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.

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.

• 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

• Disruptive mood dysregulation disorder
• Major depressive disorder
• Dysthymia
• Premenstrual dysphoric disorder
• Psychotic depression
• Seasonal affective disorder (SAD)
• Atypical depression
• Catatonic depression
• Postpartum depression
• Melancholic depression
• Pervasive refusal syndrome
• Unspecified depressive disorder

• Bipolar I disorder
• Bipolar II disorder
• Bipolar disorder not otherwise specified
• Cyclothymia
• Hypomania

• 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

• Nightmare disorder
• Rapid eye movement sleep behavior disorder
• Confusional arousals
• Sleepwalking
• Hypnagogic hallucinations
• Hypnopompic hallucinations

• Circadian rhythm sleep disorder
• Delayed sleep phase disorder
• Advanced sleep phase disorder
• Irregular sleep–wake rhythm
• Non-24-hour sleep–wake disorder
• Circadian rhythm sleep-wake disorder caused by irregular work shifts
• Jet lag

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

• Substance-induced disorder (Substance-induced psychosis, Substance-induced delirium, Substance-induced mood disorder)
• Substance intoxication
• Substance withdrawal
• Substance dependence

• Alcohol use disorder
• Alcoholic hallucinosis
• Alcohol withdrawal
• Harmful pattern of use of alcohol

• Cannabis use disorder
• Cannabis dependence
• Cannabis intoxication
• Harmful pattern of use of cannabis
• Cannabis withdrawal
• Cannabis-induced delirium
• Cannabis-induced psychosis
• Cannabis-induced mood disorder
• Cannabis-induced anxiety

• Episode of harmful use of synthetic cannabinoids
• Harmful pattern of use of synthetic cannabinoids
• Synthetic cannabinoid dependence
• Synthetic cannabinoid intoxication
• Synthetic cannabinoids withdrawal
• Synthetic cannabinoids induced delirium
• Synthetic cannabinoids induced psychotic disorder
• Synthetic cannabinoids induced mood disorder
• Synthetic cannabinoids induced anxiety

• Episode of harmful use of Opioids
• Harmful pattern of use of Opioids
• Opioid dependence
• Opioid intoxication
• Opioids withdrawal
• Opioids induced delirium
• Opioids induced psychotic disorder
• Opioids induced mood disorder
• Opioids induced anxiety

• Episode of harmful use of Sedative, hypnotic or anxiolytic
• Harmful pattern of use of Sedative, hypnotic or anxiolytic
• Sedative, hypnotic or anxiolytic dependence
• Sedative, hypnotic or anxiolytic intoxication
• Sedative, hypnotic or anxiolytic withdrawal
• Sedative, hypnotic or anxiolytic induced delirium
• Sedative, hypnotic or anxiolytic induced psychotic disorder
• Sedative, hypnotic or anxiolytic induced mood disorder
• Sedative, hypnotic or anxiolytic induced anxiety
• Amnestic disorder due to use of sedatives, hypnotics or anxiolytics
• Dementia due to use of sedatives, hypnotics or anxiolytics

• Episode of harmful use of Cocaine
• Harmful pattern of use of Cocaine
• Cocaine dependence
• Cocaine intoxication
• Cocaine withdrawal
• Cocaine induced delirium
• Cocaine induced psychotic disorder
• Cocaine induced mood disorder
• Cocaine induced anxiety
• Cocaine induced OCD
• Cocaine induced impulse control disorder

• Episode of harmful use of Amphetamines
• Harmful pattern of use of Amphetamines
• Amphetamines dependence
• Amphetamines intoxication
• Amphetamines withdrawal
• Amphetamines induced delirium
• Amphetamines induced psychotic disorder
• Amphetamines induced mood disorder
• Amphetamines induced anxiety
• Amphetamines induced OCD
• Amphetamines induced impulse control disorder

• Episode of harmful use of synthetic cathinone
• Harmful pattern of use of synthetic cathinone
• Synthetic cathinone dependence
• Synthetic cathinone intoxication
• Synthetic cathinone withdrawal
• Synthetic cathinone induced delirium
• Synthetic cathinone induced psychotic disorder
• Synthetic cathinone induced mood disorder
• Synthetic cathinone induced anxiety
• Synthetic cathinone induced OCD
• Synthetic cathinone induced impulse control disorder

• Episode of harmful use of caffeine
• Harmful pattern of use of caffeine
• Caffeine intoxication
• Caffeine withdrawal
• Caffeine induced anxiety disorder
• Caffeine-induced sleep disorder

• Episode of harmful use of hallucinogens
• Harmful pattern of use of hallucinogens
• Hallucinogens dependence
• Hallucinogen induced delirium
• Hallucinogens induced psychotic disorder
• Hallucinogens induced anxiety disorder
• Hallucinogens induced mood disorder
• Hallucinogen persisting perception disorder

• Episode of harmful use of nicotine
• Harmful pattern of use of nicotine
• nicotine intoxication
• nicotine withdrawal
• Nicotine dependence

• Episode of harmful use of volatile inhalants
• Harmful pattern of use of volatile inhalants
• Opioid dependence
• Opioid intoxication
• Volatile inhalants withdrawal
• Volatile inhalants induced delirium
• Volatile inhalants induced psychotic disorder
• Volatile inhalants induced mood disorder
• Volatile inhalants induced anxiety

• Episode of harmful use of dissociative drugs including ketamine and phencyclidine [PCP]
• Harmful pattern of use of dissociative drugs including ketamine and phencyclidine [PCP]
• Dissociative drugs including ketamine and phencyclidine [PCP] dependence
• Dissociative drugs including ketamine and phencyclidine [PCP] intoxication
• Dissociative drugs including ketamine and phencyclidine [PCP] withdrawal
• Dissociative drugs including ketamine and phencyclidine [PCP] induced delirium
• Dissociative drugs including ketamine and phencyclidine [PCP] induced psychotic disorder
• Dissociative drugs including ketamine and phencyclidine [PCP] induced mood disorder
• Dissociative drugs including ketamine and phencyclidine [PCP] induced anxiety

• Addictive personality
• Gambling disorder
• Video game addiction
• Internet addiction disorder
• Sexual addiction
• Food addiction
• Exercise addiction
• Addiction to social media
• Pornography addiction
• Shopping addiction

• 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
• Purging disorder
• Diabulimia
• Night eating syndrome
• Orthorexia nervosa
• Atypical anorexia nervosa
• Other specified feeding or eating disorder (OSFED)

• Intermittent explosive disorder
• Oppositional defiant disorder
• Conduct disorder
• Antisocial personality disorder
• Pyromania
• Kleptomania
• Mythomania
• 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

• Brief psychotic disorder
• Delusional disorder
• Delusional misidentification syndrome
• Paraphrenia
• Psychosis
• Schizophrenia
• Schizoaffective disorder
• Schizophreniform disorder
• Schizotypal personality disorder
• Shared delusional disorder

• Paranoid personality disorder
• Schizoid personality disorder
• Schizotypal personality disorder

• Antisocial personality disorder
• Borderline personality disorder
• Histrionic personality disorder
• Narcissistic personality disorder

• Avoidant personality disorder
• Dependent personality disorder
• Obsessive–compulsive personality disorder

• Depressive personality disorder
• Passive–aggressive personality disorder
• Sadistic personality disorder
• Self-defeating personality disorder

• 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
• International Classification of Diseases by the WHO - World Health Organisation