There are more reasons for patients to have prickly scratching and itching in the anus, which can be divided into the following cases: First, the anal sphincter muscle is looser in elderly patients, and mucus will stimulate the skin around the anus when defecating, causing prickly scratching and itching. Second, long-term use of drugs, such as quinidine and colchicine. Third, if there is a fungal infection at the anus, causing perianal eczema, it can also lead to prickling and itching at the anus. Fourth, the more fat patients, the buttock groove area is easy to form a wet-stained environment, so that mucus or feces stimulate the skin around the anus, resulting in anal itching. Fifth, eating spicy and stimulating food leads to fire, causing prickling and itching at the anus.