[Local sudomotor attacks in the left ulnar nerve area (author's transl)]

Two patients with circumscribed sudomotor and vasomotor attacks in the area of the ulnar nerve of the left hand are described. The onset of the disease in both cases occurred at approximately 10 years of age. Etiology is discussed in terms of an excessive and erroneous visceral-efferent regeneration after unknown trauma of the ulnar nerve during childhood.