Black around the anus can be a normal physiological phenomenon, can also be caused by pathological reasons, common causes include hemorrhoids, perianal eczema, melanoma and so on.
1. Physiological reasons: with the growth of age, the human hormone level will change, so that there will be pigmentation around the anus, resulting in darker skin around the anus, which is a normal physiological phenomenon. In addition, wiping the anus after each bowel movement will also cause pigmentation in the anus area, making the anus darker around the anus.
2. Hemorrhoids: usually appear in the sedentary, long standing, constipated people, usually hemorrhoids is due to the peripheral venous reflux obstruction caused by, so there will be black around the anus, in addition to more accompanied by pain in the anus, itching and other uncomfortable symptoms.
3. Perianal eczema: it can also cause skin pigmentation around the anus, usually black, blisters, redness, pimples and other manifestations as well as obvious itching.
4. Melanoma: it is a kind of malignant tumor, growing rapidly, due to the malformation of melanin cells will make the local skin black, if it appears near the anus, it will lead to the phenomenon of black around the anus, the earlier the discovery, the greater the possibility of cure.
5. Other reasons: for example, do not pay attention to personal hygiene, the skin around the anus appear dirt, can also lead to very dark around the anus, it is recommended to appropriate cleaning of the anus.
There are many reasons for the darkness around the anus, if there is discomfort, you should go to the hospital in time for examination, clear diagnosis and treatment.