Behcet's syndrome

In rheumatology, Behcet's Syndrome, or Behçet's Disease, is a "rare chronic inflammatory disease involving the small blood vessels. It is of unknown etiology and characterized by mucocutaneous ulceration in the mouth and genital region and uveitis with hypopyon. The neuro-ocular form may cause blindness and death. Synovitis; thrombophlebitis; gastrointestinal ulcerations; retinal vasculitis; and optic atrophy may occur as well."

A variation may be Hughes-Stovin Syndrome which is pulmonary artery aneurysms associated with systemic thrombosis.