Fecaloma is a severe form of fecal impaction, where a large, hardened mass of stool forms in the colon or rectum, making it difficult or impossible to pass. It can cause significant discomfort, abdominal pain, and may lead to complications such as bowel obstruction or perforation. Treatment typically involves manual removal, enemas, or laxatives to soften the stool and facilitate evacuation. Preventive measures include maintaining a high-fiber diet and proper hydration.