Anal Moist Heat Itching is typically caused by conditions such as perianal eczema, hemorrhoids, and anal fistula.
1. Perianal Eczema: Wearing tight jeans frequently can cause friction on the skin around the anus, or living in a hot environment can easily trigger perianal eczema, which manifests as anal moisture and itching. In severe cases, it may present with papules and vesicles ranging from the size of a pinhead to a grain of millet.
2. Hemorrhoids: Poor bowel habits or frequently lifting heavy objects can increase pressure in the rectum, making it easy to develop hemorrhoids. Typical symptoms include difficulty in defecation, accompanied by itching, a feeling of fullness, and moisture.
3. Anal Fistula: Poor dietary habits, such as frequently consuming spicy and greasy foods, or unhealthy lifestyle habits like excessive alcohol consumption and overexertion, can trigger inflammatory irritation leading to anal fistula. Typical symptoms include itching around the anus, accompanied by pain, swelling, and discomfort.
In addition to the above causes, allergic reactions and intestinal parasitic infections may also be contributing factors.