Mental Health Conditions & Disorders

• Major Depressive DisorderPersistent sadness, loss of interest, and fatigue affecting daily life
• Persistent Depressive Disorder (Dysthymia)Chronic, long-lasting low mood lasting two or more years
• Bipolar I DisorderExtreme manic episodes, often alternating with depression
• Bipolar II DisorderHypomanic and depressive episodes without full mania
• Cyclothymic DisorderMilder cycling mood swings over an extended period
• Disruptive Mood Dysregulation DisorderChronic irritability and severe temper outbursts in children
• Seasonal Affective DisorderDepression triggered by seasonal light changes, typically winter
• Premenstrual Dysphoric DisorderSevere mood and physical symptoms in the premenstrual phase

• Generalized Anxiety DisorderUncontrollable, persistent worry about everyday situations
• Panic DisorderRecurrent unexpected panic attacks and fear of future episodes
• AgoraphobiaIntense fear of situations where escape may be difficult
• Specific PhobiasMarked fear or anxiety about a specific object or situation
• Social Anxiety DisorderIntense fear of social scrutiny, embarrassment, or judgment
• ClaustrophobiaExtreme fear of enclosed or confined spaces
• Acrophobia (Fear of Heights)Irrational fear and avoidance of heights and elevated places
• Arachnophobia (Fear of Spiders)One of the most common specific animal phobias
• Separation Anxiety DisorderExcessive fear about separation from attachment figures
• Selective MutismInability to speak in certain social situations despite normal speech ability

• Obsessive-Compulsive Disorder (OCD)Unwanted recurring thoughts and repetitive behaviors
• Body Dysmorphic DisorderPreoccupation with perceived defects in physical appearance
• Hoarding DisorderPersistent difficulty discarding possessions, causing distress
• Trichotillomania (Hair-Pulling)Compulsive urge to pull out one's own hair
• Excoriation (Skin-Picking) DisorderRepetitive skin picking resulting in skin lesions and distress

• Post-Traumatic Stress Disorder (PTSD)Lasting trauma responses including flashbacks and hypervigilance
• Acute Stress DisorderShort-term trauma response within 3–30 days of the event
• Adjustment DisordersEmotional distress in response to identifiable life stressors
• Reactive Attachment DisorderDifficulty forming emotional bonds due to early neglect
• Disinhibited Social Engagement DisorderOverly familiar behavior with unfamiliar adults in children

Core Conditions

• Autism Spectrum Disorder (ASD)Varied challenges in social communication and behavior
• ADHDInattention, hyperactivity, and impulsivity affecting functioning
• Intellectual DisabilitySignificant limitations in intellectual and adaptive functioning
• Global Developmental DelayDelayed milestones across multiple areas of development

Communication Disorders

• Communication Disorders OverviewBroad category of speech and language challenges
• Language DisorderDifficulty acquiring and using language across modalities
• Speech Sound DisorderProblems with articulation or phonological processes
• Childhood-Onset Fluency Disorder (Stuttering)Disruptions in the normal flow and timing of speech
• Social Pragmatic Communication DisorderDifficulty using verbal and nonverbal communication socially

Motor & Tic Disorders

• Motor Disorders OverviewConditions affecting movement, coordination, and tics
• Developmental Coordination DisorderImpaired motor coordination not explained by other conditions
• Stereotypic Movement DisorderRepetitive, purposeless motor behaviors causing distress
• Tourette SyndromeMultiple motor and vocal tics lasting more than one year
• Persistent Motor or Vocal Tic DisorderChronic tics involving either motor or vocal, but not both
• Provisional Tic DisorderTics present for less than 12 months without prior history

Specific Learning Disorders

• Specific Learning Disorders OverviewDifficulties in academic skills not explained by intelligence
• DyslexiaReading difficulties including word recognition and decoding
• DyscalculiaDifficulty understanding numbers and mathematical concepts
• DysgraphiaChallenges with handwriting, spelling, and written expression

• SchizophreniaChronic disorder with hallucinations, delusions, and disorganized thinking
• Schizoaffective DisorderFeatures of both schizophrenia and a mood disorder
• Schizophreniform DisorderSchizophrenia-like symptoms lasting 1–6 months
• Brief Psychotic DisorderSudden onset of psychotic symptoms lasting less than one month
• Delusional DisorderFixed, false beliefs without other psychotic symptoms
• Shared Psychotic DisorderDelusions shared between two individuals in a close relationship
• Substance-Induced Psychotic DisorderPsychosis resulting from drug use, withdrawal, or medication
• Psychotic Disorder Due to Medical ConditionHallucinations or delusions caused by a physical illness

Cluster A — Odd or Eccentric

• Paranoid Personality DisorderPervasive distrust and suspicion of others' motives
• Schizoid Personality DisorderDetachment from social relationships and restricted emotions
• Schizotypal Personality DisorderEccentric behavior, odd thinking, and social discomfort

Cluster B — Dramatic or Erratic

• Antisocial Personality DisorderDisregard for others' rights and repeated rule-breaking
• Borderline Personality DisorderUnstable moods, relationships, and self-image
• Histrionic Personality DisorderExcessive emotionality and attention-seeking behavior
• Narcissistic Personality DisorderGrandiosity, need for admiration, and lack of empathy

Cluster C — Anxious or Fearful

• Avoidant Personality DisorderSocial inhibition, feelings of inadequacy, and rejection sensitivity
• Dependent Personality DisorderExcessive need for care and fear of being alone
• Obsessive-Compulsive Personality Disorder (OCPD)Preoccupation with orderliness, perfectionism, and control

• Oppositional Defiant DisorderPersistent pattern of angry, defiant behavior toward authority
• Intermittent Explosive DisorderRepeated impulsive aggressive outbursts disproportionate to triggers
• Conduct DisorderPersistent rule violation and aggression toward people or animals
• PyromaniaCompulsive fascination with fire-setting and deliberate fire-starting
• KleptomaniaRecurrent inability to resist impulses to steal unneeded items

• Anorexia NervosaSevere restriction of food intake driven by fear of weight gain
• Bulimia NervosaBinge eating followed by compensatory purging behaviors
• Binge Eating DisorderRecurrent episodes of eating large quantities without purging
• Avoidant/Restrictive Food Intake Disorder (ARFID)Restricting food intake due to sensory or fear-based reasons
• PicaPersistent eating of non-nutritive, non-food substances
• Rumination DisorderRepeated regurgitation of food without a medical cause
• OrthorexiaObsessive focus on eating only "healthy" or "pure" foods

Primary Sleep Disorders

• Insomnia DisorderDifficulty falling or staying asleep despite adequate opportunity
• Hypersomnolence DisorderExcessive sleepiness even after adequate or prolonged sleep
• NarcolepsySudden uncontrollable sleep attacks and muscle weakness

Sleep Apnea & Breathing-Related

• Obstructive Sleep ApneaRepeated airway blockage causing paused breathing during sleep
• Central Sleep ApneaBrain fails to send proper signals to breathing muscles
• Sleep-Related HypoventilationDecreased breathing rate or depth during sleep

Circadian Rhythm Disorders

• Circadian Rhythm OverviewMisalignment between internal clock and environmental schedule
• Delayed Sleep Phase DisorderSleep and wake times significantly later than desired
• Advanced Sleep Phase DisorderSleep and wake times significantly earlier than desired
• Irregular Sleep-Wake RhythmLack of clear sleep-wake cycle throughout the 24-hour day
• Non-24-Hour Sleep-Wake DisorderSleep cycle drifts progressively later each day

Parasomnias

• Parasomnias OverviewAbnormal behaviors and experiences occurring during sleep
• Sleepwalking DisorderEpisodes of walking or complex behaviors while asleep
• Sleep Terror DisorderEpisodes of intense fear and screaming during deep sleep
• Nightmare DisorderRepeated, disturbing dreams causing significant distress
• REM Sleep Behavior DisorderActing out vivid dreams due to absent sleep paralysis
• Restless Legs SyndromeUncomfortable urge to move the legs, worsened at night

• Somatic Symptom DisorderExcessive thoughts and anxiety around physical symptoms
• Illness Anxiety Disorder (Hypochondriasis)Intense preoccupation with having a serious illness
• Conversion Disorder (FND)Neurological symptoms without an identifiable neurological disease
• Factitious Disorder (Munchausen Syndrome)Falsifying illness symptoms to assume a sick role

• Dissociative Identity Disorder (DID)Presence of two or more distinct personality states
• Dissociative AmnesiaInability to recall important personal information, often traumatic
• Depersonalization/Derealization DisorderFeeling detached from one's mind, body, or surroundings
• Other Specified Dissociative DisorderSignificant dissociative symptoms not fitting other categories

• DeliriumSudden, severe confusion with fluctuating consciousness
• Major Neurocognitive Disorder (Dementia)Significant cognitive decline interfering with daily independence
• Alzheimer's DiseaseThe most common cause of dementia, with progressive memory loss
• Vascular DementiaCognitive decline caused by reduced blood flow to the brain
• Lewy Body DementiaDementia with visual hallucinations and movement problems
• Frontotemporal DementiaProgressive damage to frontal and temporal brain lobes
• Mild Neurocognitive DisorderModest cognitive decline that doesn't impair independent living
• Dual DiagnosisCo-occurring mental health disorder and substance use disorder