Psychiatric aspects of acute pandysautonomia.

Five cases of acute pandysautonomia and one case of acute autonomic and sensory neuropathy are described with special reference to psychiatric symptoms. They originally presented as psychiatric disorders, such as hysterical neurosis, epilepsy, anorexia nervosa and hypochondriacal neurosis. Psychiatric symptoms arise from their autonomic nervous dysfunction and show emotional instabilities which are often regarded as hysterical overacting.