Crohn's disease
A chronic inflammatory bowel disease. Medical term; used in clinical and everyday contexts.
Crohn's disease is a condition that causes inflammation in the digestive tract.
彼はクローン病と診断されて、治療を始めた。
He was diagnosed with Crohn's disease and started treatment.
Named after Dr. Burrill B. Crohn, who described the disease in 1932. The Japanese term is a direct loan from English 'Crohn's disease' combined with 病 (disease).