| psychoneurosis | 1. A mental or behavioural disorder of mild or moderate severity. 2. Formerly a classification of neurosis that included hysteria, psychasthenia, neurasthenia, and the anxiety and phobic disorders. Origin: psycho-+ G. Neuron, nerve, + -osis, condition (05 Mar 2000) |
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| psychoneurosis maidica | <disease> A niacin deficiency disease (pellagra) caused by improper diet and characterised by skin lesions, gastrointestinal disturbances and nervousness. Depression, dermatitis, dementia and diarrhoea are common symptoms. (27 Sep 1997) |