The patient found that the anal itching when stool, the possible causes include the following aspects: 1, do not pay attention to personal hygiene: local exudation, sweating more, resulting in local itching, discomfort. 2, sexually transmitted diseases: such as condyloma acuminata, will generally be localized with the formation of skin redundancies, while a history of unclean sexual intercourse. 3, hemorrhoids: anal itching when stool, may also be caused by hemorrhoids, hemorrhoids patients have anal The swelling is prolapsed, and it is not easy to wipe the stool clean when defecating, leading to local irritation, causing itching and discomfort. If you find anal itching during stool, it is recommended to go to a regular specialist hospital to improve the relevant examination and make a clear diagnosis.