| melancholia | <medicine> A kind of mental unsoundness characterised by extreme depression of spirits, ill-grounded fears, delusions, and brooding over one particular subject or train of ideas. Origin: L. See Melancholy. Source: Websters Dictionary (01 Mar 1998) |
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| presenile | Prior to the usual onset of senility, as in the milder, presenile dementia. (05 Mar 2000) |
| presenile dementia | Dementia of Alzheimer's disease developing before age 65. Synonym: Alzheimer's disease. Primary dementia, dementia occurring independently as a mental disorder. (05 Mar 2000) |
| presenile spontaneous gangrene | Gangrene occurring in middle life as a result of thromboangiitis obliterans. (05 Mar 2000) |
| hypochondriacal melancholia | <psychiatry> Melancholia with many associated physical complaints, often with little basis in fact. (05 Mar 2000) |
| involutional melancholia | A depressive disorder of middle life, commonly associated with the climacteric. (05 Mar 2000) |