1临床资料患者女,56岁。四肢远端反复出现疼痛性红斑30年,复发1天。30年前,患者无明显原因左小腿腓侧突然出现红斑,圆形,直径约5.0cm,隆起,伴轻度瘙痒和疼痛。次日左踝关节疼痛,但无关节肿胀、关节活动受限。当地医院以“丹毒”予对症治疗,3天后症状消失,局部皮肤正常。此后,小腿、前臂、腕关节周围及掌跖部反复出现红斑。每年4月天气骤然转热时复 1 Clinical data Female patient, 56 years old. Distracted limbs repeatedly painful erythema 30 years, 1 day recurrence. Thirty years ago, the patient had no obvious cause erythema on the fibular side of the left calf, round, with a diameter of about 5.0 cm, with bulging, mild itching and pain. Left ankle pain the next day, but no joint swelling, limited joint activity. Local hospital to “erysipelas” to symptomatic treatment, 3 days after the symptoms disappear, the local skin is normal. Since then, the lower leg, forearm, wrist and palmar plantar and repeated palpation of erythema. Every April, the weather suddenly turns hot again