Abstract
Sympathetic nerve fibres innervating the sweat glands in the skin are known to accompany sensory nerve fibres closely. Examination of sudorific function, therefore, is a useful aid in making a diagnosis of severed peripheral nerve and also provides valuable information on nerve function in the recovery stage following injury and surgery such as neurorrhaphy. Among the many methods which have been used clinically, the one employing bromphenol blue is thought to be the most simple and accurate.
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