How does anal itching often occur?

Anal itching belongs to a type of perianal disease. The causes of anal itching include:

1. Sanitary reasons: unclean cleaning after defecation, long time without bathing, which can cause itching;

2. Anal problems: anal infection, including bacterial infection, fungal infection, and some viral infections, can also occur;

3. Parasitic diseases: such as hookworm disease and filariasis, itching may occur in the anus;

4. Others: ulceration, or scratching, or mosquito bites, and other insect bites, including insects, can cause itching or allergies.