Redness and burning sensation in the perianal area may be caused by perianal abscess, perianal eczema with infection. 1. Perianal abscess: it is an acute suppurative infectious disease that occurs around the anus, anal canal and rectum, and its main manifestation is the redness and swelling of the perianal skin, pressure and pain, which can be accompanied by fever, itching, pus discharge and other symptoms, which can cause redness and burning sensation in the perianal circle. 2. Perianal eczema with infection: it is a kind of inflammatory reaction of the perianal skin caused by a variety of internal and external factors, if secondary infection, it can cause perianal redness, swelling, pain, itching, vesicles, oozing and other symptoms, which can cause perianal redness with burning sensation. There are many other causes of redness and burning sensation in the perianal area, which should be taken seriously, timely consultation, identify the cause of the disease, and follow the medical advice for further treatment or therapy to avoid aggravation of the condition.