Anal itching, itching numbness may be related to anal eczema, ringworm, anal fissure, hemorrhoids, anal fistula, life irritation and so on. 1. Anal eczema: if the anal itching is very obvious, and accompanied by small bumps with flushed base, the surface of the bumps have oozing and crusting, can be considered as anal eczema. 2. Ringworm: ringworm is caused by fungal infection, itching is very serious, accompanied by local skin thickening, rash and other phenomena. 3. Anal fissure: If the itching is relatively mild, and there are symptoms such as bleeding from the stool, it may be the itching caused by anal fissure. 4. Hemorrhoids: If there are purplish-red bumps in the anus at the same time as the itching, and the bumps will grow gradually, it may be hemorrhoids. 5. Anal fistula: anal fistula can lead to anal itching, anal moisture, anal discharge and other symptoms, and the itching is more serious. 6. life stimulation: if the patient long-term use of irritating body wash, or around the anus with residual stool, may stimulate the skin around the anus, causing itching symptoms. It is recommended that patients with anal itching timely medical care, do a systematic examination, a clear diagnosis, follow the doctor’s instructions to give treatment, to avoid delaying the aggravation of the condition.