Unilateral shivering: a result of lateral medullary infarction.

Shivering is mediated via the predominantly uncrossed reticulospinal tract. We report a case of a patient with left lateral medullary tract infarct involving the reticulospinal tract who displayed ipsilateral absence of shivering during a febrile episode. The physiology and anatomy of shivering and the reticulospinal tract is reviewed.

Biceps pain as the presenting symptom of Parkinson disease: effective treatment with L-dopa.

Parkinson disease can present remarkably as shoulder pains that may long precede the clinical diagnosis. A case is presented in which, during a 2-year period, both lower biceps brachii became exquisitely painful, with both the pain and the "frozen shoulders" responding promptly to the initiation of L-dopa therapy.