864 articles
Dance movement therapy
Dance movement therapy (DMT) is a psychotherapy using dance and movement to integrate emotional, cognitive, social, and physical health, practiced by trained therapists in mental health and rehabilitation settings.
Dance Therapy
Dance therapy (dance/movement therapy, DMT; UK: dance movement psychotherapy) is the psychotherapeutic use of dance and movement for healing, pioneered by Marian Chace in 1940s America, with the ADTA founded in 1966 and meta-analyses showing moderate psychological benefits.
Daniel Amen
Daniel Gregory Amen, born 1954, is an American psychiatrist, author, and media personality who founded Amen Clinics, a chain using SPECT brain scans to diagnose psychiatric conditions.
Daniel Paul Schreber
Daniel Paul Schreber (1842–1911), German Senatspräsident at Dresden, author of Denkwürdigkeiten eines Nervenkranken (1903), the most cited psychiatric patient, subject of Freud's 1911 paranoia essay and Lacan's Seminar III.
Daniel Samuel Pine
Daniel Samuel Pine is an American psychiatrist and NIH Distinguished Investigator who leads NIMH's Section on Development and Affective Neuroscience, studying brain mechanisms of pediatric anxiety and mood disorders.
David Nutt
David Nutt, British neuropsychopharmacologist at Imperial College London, creator of the Lancet drug-harm rankings (alcohol most harmful), sacked as UK ACMD chair in 2009, founder of Drug Science and GABA Labs.
David Reimer
David Reimer (Bruce Reimer, 1965-2004), Canadian man of the John/Joan case: reassigned female as an infant by John Money after a botched circumcision, rejected the identity, reverted to male, and became evidence against nurture-only gender theory.
David Sheff
David Sheff, American journalist and author of Beautiful Boy (2007), the memoir of son Nic Sheff's meth addiction, and Clean (2013); also known for the 1980 Playboy interview with John Lennon and Yoko Ono and the 2025 biography Yoko.
Death of Leah Betts
Leah Betts (Leah Sarah Betts, 1977–1995) was an Essex schoolgirl who died in 1995 of water intoxication after taking an ecstasy tablet at her 18th birthday party.
DECIST trial
DECIST (Dapagliflozin Effect in Cognitive Impairment in Stroke Trial), NCT05565976, a phase 2/3 randomized trial at Universidad de Guanajuato, Mexico, testing 12 months of dapagliflozin 10 mg daily on cognition after ischemic stroke; 270 planned participants, no results posted.
Deinstitutionalization
Deinstitutionalization is the process of shifting mental health care from long-stay psychiatric institutions to community-based services, so people can return to and live in their communities.
Delirium
Delirium (acute confusional state, toxic-metabolic encephalopathy) is an acute, fluctuating disturbance of attention and awareness caused by illness, drugs, or withdrawal. Common in hospitalized older adults; screened with CAM, CAM-ICU, or 4AT; treated by correcting the cause.
Delirium tremens
Delirium tremens (DT), the most severe form of alcohol withdrawal syndrome, is withdrawal delirium with tremor, agitation, and confusion occurring in 3-5% of hospitalized alcohol-withdrawal patients; treated with benzodiazepines, optionally phenobarbital.
Delusion
Delusion: a fixed false belief held with strong conviction despite conflicting evidence and not accepted by the person's culture; a core psychotic symptom defined by DSM-IV/DSM-5 and Jaspers' ununderstandability criterion, studied via aberrant salience and prediction-error models.
Delusion of being controlled
Delusion of being controlled (作為妄想, ICD-11 MB26.01): a psychotic symptom in which a person believes external forces control their thoughts, feelings, or actions; a Schneider first-rank symptom occurring in about 20% of schizophrenia patients, de-emphasized in DSM-5 and ICD-11 diagnostics.
Delusion of guilt
Delusion of guilt (ICD-11 MB26.02, 罪業妄想) is a psychotic symptom of exaggerated self-blame and deserved punishment, occurring mainly in psychotic depression (40% of psychotic major depression) and rare in schizophrenia.
Delusion of impoverishment
Delusion of impoverishment (delusion of poverty), ICD-11 MB26.0C: a fixed false conviction of being or becoming destitute despite contrary evidence, seen in psychotic depression and Cotard syndrome.
Delusion of reference
A delusion of reference is the false belief that neutral events and others' behavior carry special, usually negative, personal significance for oneself, a common psychotic symptom in schizophrenia.
Delusional disorder
Delusional disorder, also called paranoid disorder, is a psychotic condition of persistent non-bizarre delusions with preserved functioning, distinct from schizophrenia; onset near age 40, prevalence 0.02–0.2%, subtypes persecutory, jealous, erotomanic, somatic.
Delusional parasitosis
Delusional parasitosis (delusional infestation, Ekbom syndrome) is a psychotic disorder with a fixed false belief of skin parasite infestation; primary, secondary, and organic forms treated with antipsychotics such as risperidone.
Dementia
Dementia: progressive syndrome of memory and cognitive decline from brain-damaging diseases; also called senile dementia historically. Alzheimer disease causes 60–70% of 57 million cases; no cure, symptomatic drugs and risk-factor prevention only.
Dementia due to Alzheimer disease
Dementia due to Alzheimer disease (ICD-11 6D80) is the most common dementia, an insidious amnestic dementia from amyloid-beta and tau pathology, with early-onset, late-onset, and mixed ICD-11 subtypes.
Dementia praecox
Dementia praecox, also demence precoce, was Kraepelin's disused diagnosis for a chronic, deteriorating adolescent-onset psychosis; Bleuler renamed it schizophrenia in 1908, keeping Kraepelin's hebephrenic, catatonic, and paranoid subtypes.
Dementia with Lewy bodies
Dementia with Lewy bodies (DLB), a Lewy body dementia, is the second most common neurodegenerative dementia after Alzheimer's, caused by alpha-synuclein Lewy bodies, with hallucinations, fluctuating cognition, parkinsonism, and REM sleep behavior disorder.
Demoralization
Demoralization is a psychological state of helplessness, hopelessness, a sense of failure, and inability to cope, described most often in medically ill and psychiatric patients and distinct from depression.
Dependent personality disorder
Dependent personality disorder (DPD), a Cluster C personality disorder: pervasive need to be taken care of, submissive clinging behavior, fear of separation; five of eight DSM-5-TR criteria; prevalence about 0.5–0.6%; treated with psychotherapy, no approved drugs.
Depersonalization
Depersonalisation, also called depersonalization-derealization disorder (DPD, DPDR, ICD-11 6B66), is a dissociative disorder of feeling detached from one's self; coined 1898, affects 1-2% of the population.
Depersonalization-derealization disorder
Depersonalization-derealization disorder, also known as DPDR, is a dissociative disorder causing persistent feelings of detachment from oneself or one's surroundings, usually triggered by severe stress.
Depression (mood)
Depression (depressive disorder) is a common mental disorder involving persistent depressed mood or loss of interest for at least two weeks; about 322 million people affected, more common in women, treatable with psychotherapy and antidepressants.
Der nervenarzt
Der Nervenarzt (ISSN 0028-2804) is a German-language peer-reviewed journal of neurology and psychiatry founded in 1928, published by Springer Medizin, official DGPPN organ since 1955, editor Frank Schneider.