Psychological Disorders
Psychological disorders are behaviors or mental processes that are connected with various kinds of emotional distress or significant impairment in functioning.
Psychological disorders are commonly classified under the DSM-5: Diagnostic and statistical Manual of Mental Disorders compiled by the American Psychiatric Association
Anxiety Disorders by 
The Politics of Autism by 
Diagnostic and Statistical Manual of Mental Disorders DSM-5 by 
What Are Sleep Disorders? by 
What Is Anxiety Disorder? by 
What Is Panic Disorder? by 
Clinical Handbook of Psychological Disorders, Fifth Edition by 
Stuff by 
Mental Health Disorders Sourcebook by 
Elimination Disorders
Elimination disorders involve the inappropriate elimination of urine or feces and are usually first diagnosed in childhood or adolescence.
Elimination disorders include:
Bipolar and Related Disorders
Mental disorders that cause unusual shifts in mood, energy, activity levels, concentration, and the ability to carry out day-to-day tasks".
The following disorders are listed under Bipolar and Related Disorders:
Trauma-and Stressor-Related Disorders
Trauma- and stressor-related disorders involve exposure to a traumatic or stressful event. the traumatic event is revisited in the form of intrusive memories, recurrent dreams, and flashbacks.
Trauma and Stressor Related Disorders Include:
Depressive Disorders
Characterized by persistent feelings of sadness and worthlessness and a lack of desire to engage in formerly pleasurable activities.
Depressive disorders consist of the following Disorders:
Disruptive mood dysregulation disorder
Major depressive disorder (including major depressive episode)
Persistent depressive disorder (dysthymia)
Premenstrual dysphoric disorder
Substance/medication-induced depressive disorder
Depressive disorder due to another medical condition
Other specified depressive disorder
Unspecified depressive disorder
Dissociative Identity Disorder by 
The Encyclopedia of Trauma and Traumatic Stress Disorders by What Are Sleep Disorders? by 
Fast Facts for Managing Patients with a Psychiatric Disorder by What Is Panic Disorder? by 
Schizophreni by 
Childhood Diseases and Disorders Sourcebook by History on the Views on Psychological Disorders
Throughout much of Western history, the prevailing view of abnormal behavior was based on a concept of demonic possession, but with the rise of scientific thought, attention began to shift from religious dogma to scientific or naturalistic explanations of human behavior.
Psychodynamic, behavioral, humanistic, and cognitive models focus on the psychological roots of abnormal behavior.
medical model: A framework for understanding abnormal behavior patterns as symptoms of underlying physical disorders or diseases
The sociocultural model views abnormal behavior in terms of the social and cultural contexts in which it occurs.
Today there is increasing convergence toward a biopsychosocial model of abnormal behavior, which focuses on the contributions and interactions of biological and psychosocial influences.
biopsychosocial model: An integrative model for explaining abnormal behavior patterns in terms of the interactions of biological, psychological, and sociocultural factors.
diathesis-stress model: A type of biopsychosocial model that relates the development of disorders to the combination of a diathesis, or predisposition, usually genetic in origin, and exposure to stressful events or life circumstances.
diathesis: A vulnerability or predisposition to developing a disorder.
Obsessive-Compulsive and Related Disorders
Share a pattern of repetitive behavior associated with personal distress or impaired function in daily life
Obsessive-compulsive disorder is defined by recurrent, anxiety-provoking thoughts or images that seem irrational and beyond control and seemingly irresistible urges to engage in thoughts or behaviors that tend to reduce anxiety.
The following disorders are classified under Obsessive-Compulsive and Related Disorders:
Obsessive-Compulsive Disorder (OCD)
Body dysmorphic disorder
Hoarding disorder
Trichotillomania (hairpulling disorder)
Excoriation (skin-picking) disorder
Neurocognitive Disorders
Neurocognitive disorders are mental disorders in which cognitive functions are impaired such as memory, problem solving, and perception
Neurocognitive disorders (NCDs) include:
Delirium
Major Neurocognitive Disorder & Mild Neurocognitive Disorder
Major or Mild Neurocognitive Disorder Due to Alzheimer’s Disease
Major or Mild Frontotemporal Neurocognitive Disorder
Major or Mild Neurocognitive Disorder With Lewy Bodies
Major or Mild Vascular Neurocognitive Disorder
Major or Mild Neurocognitive Disorder Due to Traumatic Brain Injury
Substance/Medication-Induced Major or Mild Neurocognitive Disorder
Major or Mild Neurocognitive Disorder Due to HIV Infection
Major or Mild Neurocognitive Disorder Due to Prion Disease
Major or Mild Neurocognitive Disorder Due to Parkinson’s Disease
Major or Mild Neurocognitive Disorder Due to Huntington’s Disease
Major or Mild Neurocognitive Disorder Due to Another Medical Condition
Major or Mild Neurocognitive Disorder Due to Multiple Etiologies
Unspecified Neurocognitive Disorder
Substance-Related and Addictive Disorders
Substance-related disorders are a class of psychiatric disorders characterized by a craving for, the development of a tolerance to, and difficulties in controlling the use of a particular substance or a set of substances, as well as withdrawal syndromes upon abrupt cessation of substance use.
Substance Related Disorders are broken down into two categories: Substance use and substance induced disorder
This section includes several classes of drugs:
Alcohol
Caffeine
Cannabis
Hallucinogens​
Opioids
Sedative-, Hypnotic-, or Anxiolytic-Related Disorders​
Stimulant
Tobacco
Other (or Unknown) Substance-Related Disorders​
Non-Substance-Related Disorders​:
Gambling disorder
Dissociative Disorders
Dissociative disorders are mental disorders that involve experiencing a disconnection and lack of continuity between thoughts, memories, surroundings, actions and identity. People with dissociative disorders escape reality in ways that are involuntary and unhealthy and cause problems with functioning in everyday life
The following disorders are classified under dissociative disorders:
Schizophrenia and Other Psychotic Disorders
Defined by abnormalities in one or more of the following five domains: delusions, hallucinations, disorganized thinking (speech), grossly disorganized or abnormal motor behavior (including catatonia), and negative symptoms.
The following disorders are classified under Schizophrenia and Other Psychotic Disorders:
Schizotypal (Personality) Disorder
Delusional Disorder
Brief Psychotic Disorder
Schizophreniform Disorder
Schizophrenia
Schizoaffective Disorder
Substance/Medication-Induced Psychotic Disorder
Psychotic Disorder Due to Another Medical Condition
Catatonia
Somatic Symptom and Related Disorders
Somatic symptom and related disorders are mental health disorders characterized by an intense focus on physical (somatic) symptoms that causes significant distress and/or interferes with daily functioning
The following disorders are classified under Somatic Symptom and Related Disorders:
Somatic symptom disorder
Illness anxiety disorder
Conversion disorder (functional neurological symptom disorder)
Psychological factors affecting other medical conditions
Factitious disorder
Other specified somatic symptom and related disorder
Unspecified somatic symptom and related disorder
Neurodevelopmental Disorders
A group of conditions with onset in the developmental period. The disorders typically manifest early in development, often before the child enters grade school, and are characterized by developmental deficits that produce impairments of personal, social, academic, or occupational functioning
The DSM-5 categorizes the following disorders under Neurodevelopmental Disorders:
Intellectual Disorders:
Intellectual Developmental Disorder
Global Developmental Delay
Unspecified Intellectual Disability
Communication Disorders
Language Disorder
Speech Sound Disorder
Childhood-Onset Fluency Disorder (Stuttering)
Social (Pragmatic) Communication Disorder
Unspecified Communication Disorder
Autism Spectrum Disorder
Attention-Deficit/Hyperactivity Disorder
Specific Learning Disorders
Impairment in reading
Impairment in written expression
Impairment in mathematics
Motor Disorders
Developmental Coordination Disorder
Stereotypic Movement Disorder
Tic Disorders
Tourette's Disorder
Persistent (Chronic) Motor or Vocal Tic Disorder
Provisional Tic Disorder
Other Specified Tic Disorder
Unspecified Tic Disorder
Other Neurodevelopmental Disorders
Youtube playlist on DSM-5 disorders
Information on mental disorders from the World Health Organization
Information on Mental disorders from Medline plus
Symptoms & Treatments of Mental Disorders
Symptoms & Treatments of Mental Disorders from Psych central
the world's leading research and educational center of excellence on PTSD and traumatic stress
Anxiety Disorders
Disorders characterized by excessive worrying, fear of losing control, nervousness, and inability to relax.
The following disorders are classified under anxiety disorders:
social anxiety disorder
panic disorder
general anxiety disorder
Specific phobias: claustrophobia, acrophobia, and agoraphobia
Sexual Dysfunction Disorders
Sexual Dysfunction Disorders are a heterogeneous group of disorders that are typically characterized by a clinically significant disturbance in a person's ability to respond sexually or to experience sexual pleasure.
Sexual Dysfunction disorders include:
Delayed ejaculation
Erectile disorder
Female orgasmic disorder
Female sexual interest/arousal disorder
Genito-pelvic pain/penetration disorder
Male hypoactive sexual desire disorder
Premature (early) ejaculation
Substance/medication induced sexual dysfunction
Other specified sexual dysfunction
Unspecified sexual dysfunction.
Paraphilic Disorders
Paraphilic disorders are defined as recurrent, intense, sexually arousing fantasies, urges, or behaviors that are distressing or disabling and that involve inanimate objects, children or nonconsenting adults, or suffering or humiliation of oneself or the partner with the potential to cause harm.
According to DSM-5 and Merck Manuals disorders that are categorized under Paraphilic Disorders are:
Frotteuristic disorder
Fetishistic disorder
Pedophilia
Voyeuristic disorder
Transvestic disorder
Exhibitionism
Sexual Masochism disorder
Sexual Sadism disorder
Feeding & Eating Disorders
Feeding & Eating disorders can be characterized by a persistent disturbance of eating or eating-related behavior that results in the altered consumption or absorption of food and that significantly impairs physical health or psychosocial functioning.
The following disorders are classified under Feeding & Eating Disorders:
Pica
Rumination disorder
Avoidant/restrictive food intake disorder
Anorexia nervosa
Bulimia nervosa
Binge-eating disorder
Other Specified Feeding or Eating Disorder
Unspecified Feeding or Eating Disorder
Personality Disorders
A personality disorder is a type of mental disorder in which you have a rigid and unhealthy pattern of thinking, functioning and behaving. A person with a personality disorder has trouble perceiving and relating to situations and people.
The following disorders are classified under Personality Disorders:
Cluster A: Paranoid, schizoid, and schizotypal personality disorders
Cluster B: Antisocial, borderline, histrionic, and narcissistic personality disorders
Cluster C: Avoidant, dependent, and obsessive-compulsive personality disorders.
Other disorders that do not fall into the clusters:
General Personality Disorder
Personality change due to another medical condition
Other specified personality disorders
Unspecified personality disorder
Disruptive, Impulse-Control, and Conduct Disorders
Disruptive, Impulse-control, and Conduct Disorders can be defined as Conditions involving problems in the self-control of emotions and behaviors which result in the violation of another one's rights and/or cause significant conflict with societal norms or authority figures.
Disorders in this category include:
Oppositional defiant disorder
Intermittent explosive disorder
Conduct disorder
Antisocial personality disorder
Pyromania
Kleptomania
Other specified disruptive, impulse-control, and conduct disorders
Unspecified disruptive, impulse-control, and conduct disorders
Gender Dysphoria
Involves a conflict between a person's physical gender and the gender with which he or she identifies.
Gender Dysphoria includes:
Gender Dysphoria
In children
In Adults and Adolescence
Other Specified Gender Dysphoria
Unspecified Gender Dysphoria
Sleep-Wake Disorders
People with a Sleep-wake disorder have complaints of dissatisfaction regarding the quality, timing, and amount of sleep; resulting in daytime distress and impairment.
Sleep-Wake disorders include the following mental disorders:
Insomnia disorder
Hypersomnolence disorder
Narcolepsy
Breathing-related sleep disorders
Circadian rhythm sleep-wake disorders
Non-rapid eye movement (NREM) sleep arousal disorders
Nightmare disorder
Rapid eye movement (REM) sleep behavior disorder
Restless legs syndrome
Substance/medication-induced sleep disorder
The DSM-5 is available online, however we do not own copyright. These Pdf copies from the DSM-V can only be used for educational purposes only.
Agoraphobia