Post-exertion dizziness as the sole presenting symptom of autonomic failure.

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Abstract
An otherwise fit young man, leading an active life, whose only complaint at presentation was dizziness after extreme exertion is described. He was found later to have postural and exercise induced hypotension. Subsequently, he developed typical symptoms of autonomic failure, with postural dizziness, urinary abnormalities, and erectile failure. Progression of autonomic failure was documented on testing. A fall in blood pressure during or after exercise has been reported previously in pure autonomic failure, but a presentation with exercise induced symptoms alone is unusual.