Erysipelas is an acute inflammation of skin and its reticular lymphatic vessels, which is caused by erysipelas invading from small wounds of skin and mucosa. The focus is as red as Dan, so it is called erysipelas. The lesion spreads quickly, with little tissue necrosis or suppuration, which is contagious.

The common parts of erysipelas are lower limbs and face. Acute onset, patients often have headaches, chills, fever and other symptoms. The local manifestations are flaky rash, bright red in color, shallow in the middle, with clear edges and bumps. Finger pressure can make the red color fade, and the red color will recover quickly after removing the pressure. When the swelling spreads around, the central red fades, desquamation, color turns brown, and blisters appear at the swelling. The lesion site is burning, and the nearby lymph nodes are swollen and tender. Tinea pedis or filariasis infection can cause repeated attacks of erysipelas in lower limbs, and can lead to lymphedema and even elephantiasis.

The treatment of erysipelas is mainly non-surgical treatment, the affected limb is raised, and 3% Ravennur or 50% magnesium sulfate is used for wet and hot compress locally. Systematically use antibiotics such as sulfonamides or penicillin until the systemic and local symptoms disappear, and then continue to use them for one week before stopping taking drugs. For erysipelas of lower limbs, tinea pedis should be treated at the same time, and attention should be paid to contact infection.