nausea and vomiting are commonly associated with sympathetic withdrawal

F. Costa¹, P. Lavin¹, D. Robertson¹ and I. Biaggioni¹

(1)	Division of Clinical Pharmacology, the Clinical Research Center, and the Center for Space Physiology and Medicine, Departments of Pharmacology, Medicine, Neurology and Ophthalmology, Vanderbilt University, Nashville, TN, USA

(2)	Clinical Research Center, Room AA3228 Medical Center North, Vanderbilt University, 37232-2195 Nashville, TN, USA

Received: 6 July 1995

Conditions associated with nausea and vomiting, such as motion sickness or side effects of medications, are commonly associated with a clinical picture consistent with parasympathetic activation and sympathetic withdrawal.