After taking medicine for diarrhea, I feel the urge to go but can't.

In general, diarrhea refers to loose or watery stools. After taking medication for diarrhea, if one feels the urge to defecate but cannot pass stool, this may be caused by drug irritation, psychological factors, peptic ulcers, or other reasons. Specific analyses are as follows:

1. Drug Irritation

Certain medications can irritate the intestines or inhibit intestinal motility, leading to difficulty in bowel movements, such as iron supplements and certain antibiotics.

2. Psychological Factors

Emotional states, mental stress, and pressure may affect intestinal motility and result in difficulty passing stool. It is recommended to relax appropriately, which may help alleviate symptoms.

3. Peptic Ulcer

Peptic ulcers occur when the mucosal lining of the gastrointestinal tract is digested by gastric acid or pepsin, which may also increase the risk of defecation difficulties. Under medical guidance, patients can use medications such as lansoprazole tablets or omeprazole enteric-coated tablets to relieve symptoms.

Besides the above common causes, this condition could also be due to inflammatory bowel disease, enteritis, intestinal polyps, or other factors. It is recommended to seek timely medical evaluation at a hospital to determine the underlying cause and receive targeted treatment.