| dissociative disorders | Sudden temporary alterations in the normally integrative functions of consciousness. (12 Dec 1998) |
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| anaesthetics, dissociative | Intravenous anaesthetics that induce a state of sedation, immobility, amnesia, and marked analgesia. Subjects may experience a strong feeling of dissociation from the environment. The condition produced is similar to neuroleptanalgesia, but is brought about by the administration of a single drug. (12 Dec 1998) |
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| dissociative anaesthesia | A form of general anaesthesia, but not necessarily complete unconsciousness, characterised by catalepsy, catatonia, and amnesia, especially that produced by phenylcyclohexylamine compounds, including ketamine. (05 Mar 2000) |
| dissociative hysteria | An unconscious process sometimes seen in patients with multiple personalities, or in hysteria, in which a group of mental processes is separated from the rest of the thinking processes, resulting in an independent functioning of these processes and a loss of the usual relationships among them. (05 Mar 2000) |
| dissociative reaction | Reaction characterised by such dissociative behaviour as amnesia, fugues, sleepwalking, and dream states. (05 Mar 2000) |
| dissociative recombination | <radiobiology> The combination of an electron with a positive molecular ion, followed by dissociation of the molecule in which the resulting atoms/molecules carry off the excess energy released in the recombination. (09 Oct 1997) |
| affective personality disorder | A disturbance of feelings or mood expressed as a milder form of depression and related emotional features that colour the whole psychic life and for which psychosocial stressors are believed to play the major role. (05 Mar 2000) |
| alcohol amnestic disorder | <psychiatry> A mental disorder with brain damage characterised by amnesia, compensatory confabulation, disturbance of attention, and peripheral neuritis. It is usually associated with alcoholism and dietary deficiencies. (12 Dec 1998) |
| antisocial personality disorder | <psychiatry> An individual who engages in deviant behaviour with lack of remorse. (13 Jan 1998) |
| asthenic personality disorder | A personality type characterised by low energy level, easy fatigability, incapacity for enjoyment, lack of enthusiasm, and oversensitivity to physical and emotional stress. When appearing in marked form it becomes a psychological disorder (asthenic personality disorder), also called dependent personality. Synonym: asthenic personality disorder, dependent personality disorder. (05 Mar 2000) |
| attention deficit disorder | An inability to control behaviour due to difficulty in processing neural stimuli. (12 Dec 1998) |
| attention deficit disorder with hyperactivity | A behaviour disorder originating in childhood in which the essential features are signs of developmentally inappropriate inattention, impulsivity, and hyperactivity. Although most individuals have symptoms of both inattention and hyperactivity-impulsivity, one or the other pattern may be predominant. The disorder is more frequent in males than females. Onset is in childhood. Symptoms often attenuate during late adolescence although a minority experience the full complement of symptoms into mid-adulthood. (12 Dec 1998) |
| attention deficit hyperactivity disorder | <psychiatry> A condition seen in children where there is increased motor activity in association with poor attention span. Often treated with amphetamine medications. (27 Sep 1997) |
| autistic disorder | autism, infantile autism |
| autonomic disorder | Disorganization of autonomic processes. (05 Mar 2000) |
| avoidant disorder of adolescence | A mental disorder occurring in childhood or adolescence characterised by an excessive shrinking away from contact with people who are unfamiliar. Synonym: avoidant disorder of adolescence. (05 Mar 2000) |