A 28-year-old woman presented with severe, persistent burning pain in the legs and feet, with marked erythema, swelling, and warmth (Fig. 1, left-hand panels). The erythema had begun at the age off our years, with no associated disorder. After adolescence, the symptoms became continuous, with erythema that extended to the thighs and the development of live do-like lesions. Burning pain during t...
