Categories: All articles with unsourced statements | Articles with unsourced statements since July 2007 | Mood disorders In psychology, anhedonia is a patients inability to experience pleasure from normally pleasurable life events such as eating, exercise, and social/sexual interactions. ... On the Threshold of Eternity. ... Blunted affect is the scientific term describing a lack of emotional reactivity on the part of an individual. ... Post-traumatic stress disorder (PTSD) is a term for certain severe psychological consequences of exposure to, or confrontation with, stressful events that the person experiences as highly traumatic. ... Antisocial personality disorder (APD) is a psychiatric condition characterized by an individuals common disregard for social rules, norms, and cultural codes, as well as impulsive behavior, and indifference to the rights and feelings of others. ... Atypical Depression (AD) is a subtype of Dysthymia and Major Depression characterized by mood reactivity — being able to experience improved mood in response to positive events. ... On the Threshold of Eternity. ... The International Statistical Classification of Diseases and Related Health Problems (commonly known by the abbreviation ICD) is a detailed description of known diseases and injuries. ... Mental disorder or mental illness are terms used to refer psychological pattern that occurs in an individual and is usually associated with distress or disability that is not expected as part of normal development or culture. ... Emotional and behavioral disorders (EBD) is a broad category which is mostly being used in an educational context to group a range of more specific perceived difficulties of children and adolescents. ... For other uses, see Dementia (disambiguation). ... Multi-infarct dementia, also known as vascular dementia, is a form of dementia resulting from brain damage caused by stroke or transient ischemic attacks (also known as mini-strokes). ... Picks disease has two meanings that are often confused: 1) Pathology: Neurologists currently use the term Picks disease to mean specifically one of the pathological subtypes of frontotemporal lobar degeneration (FTLD). ... Creutzfeldt-Jakob disease (CJD) is a very rare and incurable degenerative neurological disorder (brain disease) that is ultimately fatal. ... AIDS dementia complex (ADC; also known as HIV dementia, HIV encephalopathy and HIV-associated dementia) has become a common neurological disorder associated with HIV infection and AIDS. It is is a metabolic encephalopathy induced by HIV infection and fueled by immune activation of brain macrophages and microglia. ... Fronto-temporal dementias selectively affect the frontal lobe of the brain. ... This article is about the mental state and medical condition. ... Post-concussion syndrome, also known as postconcussive syndrome or PCS, is a set of symptoms that a person may experience for weeks, months, or even years after a concussion, a mild form of traumatic brain injury. ... A psychoactive drug or psychotropic substance is a chemical that alters brain function, resulting in temporary changes in perception, mood, consciousness, or behaviour. ... ... The Drunkenness of Noah by Giovanni Bellini Drunkenness is the state of being intoxicated by consumption of alcohol to a degree that mental and physical facilities are noticeably impaired. ... Physical dependence refers to a state resulting from habitual use of a drug, where negative physical withdrawal symptoms result from abrupt discontinuation. ... This article needs cleanup. ... Opioid dependency is a medical diagnosis characterized by an individuals inability to stop using opioids even when objectively in his or her best interest to do so. ... Cocaine dependence (or addiction) is physical and psychological dependency on the regular use of cocaine. ... Withdrawal, also known as withdrawal syndrome, refers to the characteristic signs and symptoms that appear when a drug that causes physical dependence is regularly used for a long time and then suddenly discontinued or decreased in dosage. ... Benzodiazepine withdrawal syndrome, caused by withdrawal or dosage reduction of benzodiazepines, is the symptoms which appear when a patient who has taken the drug for a period of time stops taking the drug. ... For the beer, see Delirium Tremens (beer). ... Korsakoffs syndrome (Korsakoffs psychosis, amnesic-confabulatory syndrome), is a degenerative brain disorder caused by the lack of thiamine (vitamin B1) in the brain. ... Psychosis is a generic psychiatric term for a mental state often described as involving a loss of contact with reality. Stedmans Medical Dictionary defines psychosis as a severe mental disorder, with or without organic damage, characterized by derangement of personality and loss of contact with reality and causing deterioration... Disorganized schizophrenia is a subtype of schizophrenia as defined in the Diagnostic and Statistical Manual of Mental Disorders. ... Schizotypal personality disorder, or simply schizotypal disorder, is a personality disorder that is characterized by a need for social isolation, odd behaviour and thinking, and often unconventional beliefs such as being convinced of having extra sensory abilities. ... Delusional disorder is a psychiatric diagnosis denoting a psychotic mental illness that involves holding one or more non-bizarre delusions in the absence of any other significant psychopathology (signs or symptoms of mental illness). ... Folie à deux (literally, a madness shared by two) is a rare psychiatric syndrome in which a symptom of psychosis (particularly a paranoid or delusional belief) is transmitted from one individual to another. ... A mood disorder is a condition whereby the prevailing emotional mood is distorted or inappropriate to the circumstances. ... This article is an expansion of a section entitled Mania from within the main article Bipolar disorder. ... For other uses, see Bipolar. ... On the Threshold of Eternity. ... Cyclothymia is a mood disorder. ... Agoraphobia is an anxiety disorder which primarily consists of the fear of certain settings that may present unexpected challenges or demands. ... Anxiety disorder is a blanket term covering several different forms of abnormal, pathological anxiety, fears, phobias. ... Panic Disorder is a psychiatric condition characterized by recurring panic attacks in combination with significant behavioral change or at least a month of ongoing worry about the implications or concern about having other attacks. ... Generalized anxiety disorder (GAD) is an anxiety disorder that is characterized by excessive, uncontrollable and often irrational worry about everyday things, which is disproportionate to the actual source of worry. ... Social anxiety, sometimes known as social phobia or social anxiety disorder (SAD), is a common form of anxiety disorder that causes sufferers to experience intense anxiety in some or all of the social interactions and public events of everyday life. ... OCD redirects here. ... Acute stress reaction is a psychological condition arising in response to a terrifying event. ... Post-traumatic stress disorder (PTSD) is a term for certain severe psychological consequences of exposure to, or confrontation with, stressful events that the person experiences as highly traumatic. ... In psychology, adjustment disorder refers to a psychological disturbance that develops in response to a stressor. ... Conversion Disorder is a DSM-IV diagnosis which describes neurological symptoms such as extreme weakness, paralysis, sensory disturbance, seizure and/or attacks that may resemble a known organic disease such as epilepsy or dystonia, but which cannot be currently attributed to neurological disease. ... Ganser syndrome is a psychiatric disorder characterised by approximate answers to questions. ... Somatization disorder (or Briquets disorder) is a type of mental illness in which a patient manifests a psychiatric condition as a physical complaint. ... Neurasthenia was a term first coined by George Miller Beard in 1869 to describe a condition with symptoms of fatigue, anxiety and pessimism. ... For other uses, see Anorexia. ... Bulimia nervosa, commonly known as bulimia, is an eating disorder and psychological condition in which the subject engages in recurrent binge eating followed by feelings of guilt, depression, and self-condemnation and intentional purging to compensate for the excessive eating, usually to prevent weight gain (see anorexia nervosa). ... Dyssomnias are a broad classification of sleeping disorder that make it difficult to get to sleep, or to stay sleeping. ... This article is about the sleeping disorder. ... Hypersomnia, also known as excessive daytime sleepiness (EDS), is excessive amount of sleepiness. ... A parasomnia is any sleep disorder such as sleepwalking, sleepeating, sleep sex, teeth grinding, night terrors, rhythmic movement disorder, REM behaviour disorder, restless leg syndrome, and somniloquy (or sleep talking), characterized by partial arousals during sleep or during transitions between wakefulness and sleep. ... For other uses, see Night Terror. ... The current usage of the term nightmare refers to a dream which causes the sleeper a strong unpleasant emotional response. ... Sexual dysfunction or sexual malfunction (see also sexual function) is difficulty during any stage of the sexual act (which includes desire, arousal, orgasm, and resolution) that prevents the individual or couple from enjoying sexual activity. ... Erectile dysfunction (ED) or impotence is a sexual dysfunction characterized by the inability to develop or maintain an erection of the penis. ... Premature ejaculation (PE), also known as rapid ejaculation, premature climax or early ejaculation, is the most common sexual problem in men, affecting 25%-40% of men. ... Vaginismus is a condition which affects a womans ability to engage in any form of vaginal penetration, including sexual penetration, insertion of tampons, and the penetration involved in gynecological examinations. ... Dyspareunia is painful sexual intercourse, due to medical or psychological causes. ... Satyriasis redirects here. ... Postpartum depression (also postnatal depression) is a form of clinical depression which can affect women, and less frequently men, after childbirth. ... Personality disorder, formerly referred to as a Characterological disorder is a class of mental disorders characterized by rigid and on-going patterns of thought and action. ... Passive-aggressive behavior refers to passive, sometimes obstructionist resistance to following authoritative instructions in interpersonal or occupational situations. ... Kleptomania (Greek: κλέπτειν, kleptein, to steal, μανία, mania) is an inability or great difficulty in resisting impulses of stealing. ... Trichotillomania (TTM), or trich as it is commonly known, is an impulse control disorder characterized by the repeated urge to pull out scalp hair, eyelashes, facial hair, nose hair, pubic hair, eyebrows or other body hair. ... “Voyeur” redirects here. ... A factitious disorder or FD is a mental disorder where the ill individuals symptoms are either self-induced or falsified by the patient. ... This page refers to the self-inflicted factitious disorder. ... Egodystonic sexual orientation is an egodystonic condition. ... Mental retardation is a term for a pattern of persistently slow learning of basic motor and language skills (milestones) during childhood, and a significantly below-normal global intellectual capacity as an adult. ... Developmental disorders are disorders that occur at some stage in a childs development, often retarding the development. ... Specific developmental disorders categorizes specific learning disabilities and developmental disorders affecting coordination. ... Speech disorders or speech impediments, as they are also called, are a type of communication disorders where normal speech is disrupted. ... Expressive language disorder (DSM 315. ... For other uses, see Aphasia (disambiguation). ... Expressive aphasia, known as Brocas aphasia in clinical neuropsychology and agrammatic aphasia in cognitive neuropsychology, is an aphasia caused by damage to Brocas area in the brain. ... Receptive aphasia, also known as Wernickes aphasia, Fluent aphasia or sensory aphasia in clinical neuropsychology and cognitive neuropsychology, is a type of aphasia often (but not always) caused by neurological damage to Wernickes area in the brain. ... Landau-Kleffner syndrome (LKS), also called progressive epileptic aphasia, is a rare, childhood neurological syndrome characterized by the sudden or gradual development of aphasia (the inability to understand or express language) and an abnormal electroencephalogram (EEG). ... For the programming language, see Lisp (programming language). ... This article is about developmental dyslexia. ... Dysgraphia (or agraphia) is a deficiency in the ability to write, regardless of the ability to read, not due to intellectual impairment. ... Gerstmann syndrome is a neurological disorder. ... Developmental Dyspraxia is one or all of a heterogeneous range of psychological development disorders affecting the initiation, organization and performance of action[1]. It entails the partial loss of the ability to coordinate and perform certain purposeful movements and gestures in the absence of motor or sensory impairments. ... The diagnostic category pervasive developmental disorders (PDD), as opposed to specific developmental disorders (SDD), refers to a group of disorders characterized by delays in the development of multiple basic functions including socialization and communication. ... Autism is a brain development disorder characterized by impairments in social interaction and communication, and restricted and repetitive behavior, all exhibited before a child is three years old. ... A woman with Retts Syndrome Rett syndrome is a neurodevelopmental disorder that is classified as a pervasive developmental disorder by the DSM-IV. Many [1] argue that this is a mis-classification just as it would be to include such disorders as fragile X syndrome, tuberous sclerosis, or Down... Asperger syndrome (also Aspergers syndrome, Aspergers disorder, Aspergers, AS, or AD) is one of several autism spectrum disorders (ASD) characterized by difficulties in social interaction and by restricted and stereotyped interests and activities. ... Attention-Deficit/Hyperactivity Disorder (ADHD) previously known as Attention Deficit Disorder (ADD), is generally considered to be a developmental disorder, largely neurological in nature, affecting about 5% of the worlds population. ... In psychiatry, conduct disorder is a pattern of repetitive behavior where the rights of others or the social norms are violated. ... Oppositional defiant disorder is a controversial psychiatric category listed in the Diagnostic and Statistical Manual of Mental Disorders where it is described as an ongoing pattern of disobedient, hostile, and defiant behavior toward authority figures that goes beyond the bounds of normal childhood behavior. ... Separation Anxiety redirects here. ... Selective mutism is a social anxiety disorder in which a person who is normally capable of speech is unable to speak in given situations. ... It has been suggested that this article or section be merged with Attachment disorder. ... A tic is a repeated, impulsive action, almost reflexive in nature, which the actor feels powerless to control or avoid. ... “Tourette” redirects here. ... Speech disorders or speech impediments, as they are also called, are a type of communication disorders where normal speech is disrupted. ... “Stutter” redirects here. ... Cluttering (also called tachyphemia) is a communicative disorder characterized by speech that is difficult for listeners to understand due to rapid speaking rate, erratic rhythm, poor syntax or grammar, and words or groups of words unrelated to the sentence. ...