Hard erythema

Hard erythema (Erythema induratum) is a disease whose cause is not known to occur in women. Often invades the lower legs of both lower limbs, the inner side of the lower leg, but also the outer side of the lower leg, the thigh above the knee, and even the upper limb. The head and face are rare, showing bilateral bilateral symmetry or bright red, or dark red, or purplish nodularity. Damage and tenderness are obvious, and it is generally not itchy. Divided into Bazin hard erythema and Wlitfield hard erythema. More common young and middle-aged women.