ABSTRACT
This chapter outlines the characteristics of emesis associated with the neurological disorders. It describes possible pathophysiological mechanisms that provoke such emesis, emphasizing not only the multiplicity and the divergent origins of stimuli affecting the vomiting center, but also certain common features. Emesis commonly accompanies severe pain. The sudden intense pain associated with myocardial infarction and violent injuries is often accompanied by nausea and vomiting. Nausea and vomiting also occur in association with severe tension headaches, craniocervical pains, and cluster headaches. Emesis commonly accompanies disorders affecting the central vestibular connections such as brain stem hemorrhage, cerebello-pontine angle tumors, and the Wallenberg syndrome. Vomiting associated with posterior fossa tumors appears insidiously. The mechanism of vomiting in such cases is therefore difficult to explain since the origin, destination, and relationship of the epileptogenic activity to the bouts of vomiting is difficult to determine.
