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The sweating response induced by a heating stimulus was significantly lower on the ipsilateral side to the infarction than on the contralateral side.Constant ipsilateral hypohidrosis was established in 83%of the patients in the acute phase,in 100%at 1 month,and in 76%at 6 months after infarction.No differences of sweating response were found between medullary and pontine infarcts.Hypohidrosis throughout the whole ipsilateral side of the body,a long-lasting phenomenon that has not previously been described,is an essential feature of autonomic failure in brain stem infarction. |
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