Usually a symptom in older people. This is a symptom in which due to poor circulation the muscles of the lower extremity, particularly the calf muscles, cramp due to lack of blood flow and therefore oxygen to the tissues as well as a build up of lactic acid which is produced secondary to normal use. The acupuncture increases the blood flow for removal of the lactic acid and a restoration of the oxygen to the tissues.

A sift in the nervous system initiates this disorder as a response to cold weather in the hands. The hands vascular system constricts causing the fingers to blanch and turn purple and red. It is a common occurrence among people with poorer circulation and may have underlying vascular disease as its origin. Acupuncture is effective in the treatment of this disorder by increasing circulation and decreasing the reactive responses that generate the disorder.