Colorectal hyperkeratosis may cause abdominal pain, which is mainly related to the deterioration of peristalsis of the large intestine and the long-term use of laxatives. First of all, colorectal melanosis is the phagocytes in the colon mucosa have lipofuscin, resulting in the loss of healthy function of the patient’s intestinal tract, the peristalsis of the large intestine becomes poor, the patient may produce constipation, abdominal pain and other symptoms, and may cause pain in the lower abdomen and other manifestations. There are also some patients are due to a long time internal laxatives, resulting in the colon mucosa of the melanin continues to deposit, causing non-inflammatory bowel disease. Patients who have abdominal pain after bowel movement are mainly caused by prolonged constipation, the condition continues to worsen, and no timely measures are taken. In terms of treatment, patients are advised not to use laxatives containing coloring. You can follow the doctor’s instructions to take lactulose, etc. It is recommended that patients usually eat more fiber-rich foods, such as apples, bananas, etc., which can effectively improve the symptoms of constipation. Colorectal melanosis accompanied by abdominal pain is recommended to timely hospital treatment.