The front is black and the back is normal. What's going on?

1, food and drugs

containing iron, vitamins, activated carbon and other components of food and drugs, may lead to stool black, changes are usually temporary, will not last for a long time.

2, colitis

When the patient's colon mucosa tissue is stimulated by inflammatory substances, may cause tissue damage bleeding, and then cause patients with black stool symptoms, in the case of control, discomfort symptoms will be improved.

3, gastric ulcer

stomach tissue ulcer Ulcerative damage, usually cause gastrointestinal bleeding, resulting in patients with stool black, with the recovery of the disease, stool color gradually normal.

Suggest abnormal changes in stool color patients, need to actively seek medical treatment to check the cause, according to the specific reasons for treatment.