Having a hard bowel movement, passing stool in small pellet-like pieces.

Under normal circumstances, when defecating, if the stool comes out in hard lumps and appears as separate pellet-like pieces, this condition is known as constipation or hard stool—a common digestive system disorder. It is typically caused by factors such as dietary habits, intestinal nervous system dysfunction, inflammatory bowel disease, among others. A detailed analysis is as follows:

1. Dietary Habits

Insufficient dietary fiber and inadequate water intake, along with unhealthy diets high in oil, salt, sugar, and fat, are among the main causes of constipation. Over time, these habits may lead to gastrointestinal problems. It is recommended to maintain a balanced diet to help alleviate symptoms.

2. Intestinal Nervous System Dysfunction

Weakened neural regulation of the intestines may reduce intestinal motility and increase excessive water absorption, resulting in constipation. Patients may take medications such as pinaverium bromide tablets or montmorillonite powder under medical guidance to relieve symptoms.

3. Inflammatory Bowel Disease

Intestinal disorders such as inflammatory bowel disease can cause excessive mucus secretion or dysfunction of the anal sphincter, impairing gastrointestinal motility and making it difficult for stool to pass smoothly, ultimately leading to constipation. Under a doctor's supervision, patients may use medications like Bifidobacterium triple viable capsules or prednisone acetate tablets for treatment.

Besides the above common causes, constipation may also result from conditions such as congenital megacolon, irritable bowel syndrome, or redundant colon. It is advisable to seek timely medical evaluation at a hospital to determine the underlying cause and receive targeted treatment.