Thin stools, narrow stools This can be a symptom of various medical conditions, including: 1. Constipation: When stool becomes hard and dry, making it difficult to pass it, which can cause stool to become narrow. 2. Intestinal Infections: Certain bacterial or viral infections can cause changes in the shape of stool. 3. Irritable Bowel Syndrome (IBS): Symptoms of IBS can include changes in stool consistency. 4. Colon Cancer: Tumors or blockages in the intestines can cause stool to become thin. If you are experiencing thin stools for a long time, you should consult a doctor.
