What is the reason for wet and itchy anus?

If the anus is damp and itchy, the patient should first pay attention to whether there is any abnormality in his or her anus, such as dampness caused by skin diseases. When the anus becomes wet and itchy, it is mostly caused by irritation from intestinal fluid overflow or some skin inflammation. If the condition persists for a long time, it is recommended that the patient go to a regular hospital for diagnosis in time.

1. Anal incontinence

Anal fistula and perianal abscess surgery can damage part of the anal sphincter and lead to incomplete incontinence. The patient cannot control loose stools, and loose stools and intestinal fluid often overflow from the anus and contaminate underwear, irritating the area around the anus and causing it to become wet and unclean.

2. Intestinal fluid overflow stimulation

Chronic rectal inflammation, anal sinusitis, prolapse of rectal mucosa or prolapse of large hemorrhoids, if not promptly reinserted, may be accompanied by the outflow of some intestinal fluid, repeatedly irritating the anus and causing anal moisture.

3. Inflammatory irritation in the anorectum and surrounding areas

Anal sinusitis, anal papillitis, perianal abscess, anal fistula, external hemorrhoid inflammation, ulcerative proctitis accompanied by rectal inflammatory exudate irritating the anus can also cause anal pain.

4. Perianal skin diseases

Skin diseases such as perianal eczema, anal erythrasma, and anal ringworm, in addition to local skin lesions, are often accompanied by moist and unclean anus due to long-term irritation of the perianal skin.

5. Psychological and neurological factors

Anal neurosis, etc.