What is skin anthrax?
Skin anthrax accounts for about 98% of anthrax, and lesions are more common in exposed parts such as face, neck, shoulders, hands and feet. Initially a macule or papule, the next day there is a blisters, containing a light yellow liquid, and the surrounding tissue is hard and swollen. On the 3rd to 4th day, the center showed hemorrhagic necrosis and subsided slightly. There were small groups of small blisters around, and the edema area continued to expand. On the 5th to 7th day, the necrotic area collapsed into a shallow ulcer, and the blood sample exudate formed a hard and black like charcoal block eschar, and there was granulation tissue formation under the armpit (ie, anthrax). The size of the eschar necrotic area is equal, and the skin infiltration and edema around it are large. Because the local peripheral nerve is under pressure and pain, there is a slight itching and no abscess formation, which is characteristic of anthrax. Later, as the edema subsided, the black sputum fell off within 1 to 2 weeks and gradually healed into sputum. Onset of fever (38 ~ 39 ° C) headache, joint pain, general discomfort and local lymph nodes and splenomegaly. In a small number of cases, there is no black sputum formation and massive edema (ie, malignant edema), which spreads rapidly and can cause large necrosis, which is more common in loose tissues such as eyelids, neck, thighs and hands. The systemic symptoms are severe, and if the treatment is delayed, the prognosis is poor.