If you find sores inside the buttocks, there may be the following reasons: 1, may be due to sebaceous cysts combined with infection, this situation may be good and bad, local purulent secretion oozing, accompanied by obvious pain. 2, the possible cause is due to hemorrhoids, usually bleeding after defecation, if it is external hemorrhoids will also be accompanied by obvious pain, anal itching and other symptoms. 3, if you find the If you find sores inside your buttocks, it may be caused by perianal abscess, anal fistula. If you find sores inside the buttocks, it is recommended to go to the regular specialist hospital systematic examination, find a professional physician to do an anal diagnosis as well as anoscopy, to further clarify the diagnosis, and then according to the different causes of the disease, timely symptomatic treatment.