[A case of acute reversible dysautonomia in an adolescent].

A 16 years old male presented with orthostatic hypotension with constant pulse, associated with severe constipation, decrease of sudoral secretions, weight loss and asthenia. This dysautonomia evolued during a period of 6 months and disappeared completely leaving no sequellaes. The symptoms appeared after a rubella. The authors discuss the originality of this observation among the pure pan-dysautonomia and the modes of exploration of the autonomic nervous system. Its mechanisms is probably auto-immune.