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Article
January 1975

Myokymia

Arch Dermatol. 1975;111(1):130. doi:10.1001/archderm.1975.01630130132023
Abstract

To the Editor.—  We read with great interest the case reported by Fine et al in the SOCIETY TRANSACTIONS of the Archives (110:141, 1974). They described the patient as having unusual skin movements of quivering, dimpling, and rippling. We believe that it probably represents a typical case of myokymia (myo + kyma, Greek, meaning wave). This rare neurologic entity was first described by Schultze1 in 1895. It is characterized by spontaneous, undulating, brief or continual contractions of motor units or groups of muscle fibers, liking "the movement of an army of parallel earthworms.1" Most patients are asymptomatic or they may feel flickering movement of the affected area. Age of onset varies, and there is no preponderance for either sex.While the cause is still unknown, the disturbance is most likely distal to the anterior horn cell.2 It is believed that the instability of the distal part of the

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