ベーチェット病
Behçet's disease is a triad of mouth ulcers, genital ulcers and anterior uveitis. The main feature of Behçet's disease is aphthous-like ulceration, but this is usually more severe than seen in aphthous stomatitis without a systemic cause, and typically resembles major or herpetiforme ulceration or both. Aphthous-like ulceration is the first sign of the disease in 25–75% of cases. Behçet's is more common in individuals whose ethnic origin is from regions along the Silk Road (between the Mediterranean and the Far East). It tends to be rare in other countries such as the United States and the United Kingdom. MAGIC syndrome is a possible variant of Behçet's disease, and is associated with aphthous-like ulceration. The name stands for "mouth and genital ulcers with inflamed cartilage" (relapsing polychondritis).