If you find itchy buttocks, there may be the following reasons: 1, may be due to not pay attention to personal hygiene, local sweat gland secretion stimulation caused by local itching. 2, may be due to perianal eczema caused by the local perianal skin maculopapular changes. 3, itchy buttocks may be due to hemorrhoids caused by hemorrhoid, hemorrhoidal patients with anal swelling local protruding, the texture of the softer, not easy to wipe clean the stool, resulting in local secretion stimulation caused by the anal itch. 4, itchy buttocks may be due to some sexually transmitted diseases, such as warts and acnes. It is easy to wipe clean the stool, resulting in local secretion stimulation caused by anal itching. 4, itchy buttocks may be due to some sexually transmitted diseases, such as warts.