The stool is normal at first, but becomes loose and mucus-like toward the end.

Under normal circumstances, having formed stool at the beginning followed by loose, mucus-like stool resembling nasal discharge may be caused by factors such as irritable bowel syndrome (IBS), intestinal inflammation, or dysentery. A detailed analysis is as follows:

1. Irritable Bowel Syndrome (IBS)

IBS is caused by intestinal motility disorders and symptoms include abdominal pain, diarrhea, constipation, and bloating. Some individuals may experience normal stool at the beginning followed by loose, mucus-like stool. Under a doctor's guidance, patients can take medications such as pinaverium bromide tablets or smectite powder for treatment.

2. Intestinal Inflammation

Intestinal inflammation is a condition caused by inflammation of the intestinal mucosa. Symptoms include abdominal pain, diarrhea, constipation, bloating, and anemia. Some people may also pass stool that starts off normal but becomes loose and mucus-like toward the end. Patients should follow medical advice and may use medications such as cefixime tablets or azithromycin tablets for treatment.

3. Dysentery

Dysentery, caused by bacterial infection, can also lead to stool that is initially normal but becomes loose and watery later. Under a doctor’s supervision, patients can use medications such as norfloxacin tablets or ofloxacin tablets for treatment.

Besides the above common causes, this symptom could also result from schistosomiasis, colitis, or colon cancer. It is recommended to seek timely medical evaluation at a hospital to determine the exact cause and receive targeted treatment. Additionally, maintaining healthy lifestyle habits and avoiding spicy or irritating foods is important to support recovery.