Perianal infection can include bacterial infection or viral infection, bacterial infection can mainly lead to perianal inflammation and so on, viral infection can lead to warts and other diseases. It is recommended that the corresponding groups of people consult the doctor in time and actively treat. 1. Bacterial infections in the perianal area are commonly caused by Staphylococcus aureus, Escherichia coli, Streptococcus, Aspergillus, and so on. When the local skin is broken and the body’s resistance decreases, it is easy for bacteria to invade the area and thus induce infections. At this time, patients can show perianal pain, perianal itching, perianal redness and swelling, perianal hard knots or lumps, body fever and other symptoms. 2. Perianal viral infection is most commonly caused by the human papilloma virus (HPV) perianal warts, manifested in the perianal skin of a number of scattered distribution of reddish or skin color pimples, later can be fused to form cauliflower-shaped, papillomatous organisms; part of the presence of the anal canal in the skin lesions can lead to the anus of the sense of foreign body, pressure sensation, accompanied by defecation abnormalities; the patient may be self-conscious of local itching, pain. Perianal bacterial infection if long-term, can also lead to abnormal anal function, perianal abscess, anal fistula, infectious shock and other complications; if perianal viral infection for a long time, may stimulate local other pathogens infection, or lead to cancer. Perianal discomfort is recommended to seek medical treatment in a timely manner, under the guidance of a professional doctor to standardize the treatment and medication, so as not to delay the condition.