Crohn's disease is a chronic condition and not considered a major illness. It involves inflammatory lesions of the intestines, often persists over a long duration, and tends to recur frequently without easy cure. It mainly affects the terminal ileum and the right half of the colon. Clinically, it presents symptoms such as diarrhea, abdominal pain, intestinal obstruction, and fever. It can also affect the liver, skin, and joints, with complications including acute perforation or rectal bleeding. Current treatment involves a combination of medication and surgery. Prompt surgical intervention is required in cases of complete intestinal obstruction, acute intestinal perforation, or substantial internal bleeding, and nutritional support should also be enhanced.