Electrophysiological study of amyotrophy associated with acute asthma (asthmatic amyotrophy).

A girl developed acute amyotrophy of the left arm five days after onset of an acute attack of bronchial asthma. Slow improvement in muscle power began nine months later. There was severe denervation with preservation of sensation and normal motor nerve conduction velocities when these were measurable. The patient is similar to 10 patients reported by Hopkins (1974).