ARC
AIDS-related complex, or a series of symptoms related to an active human immunodefi ciency virus (HIV) infection, including general malaise, night sweats, dementia, wasting, and opportunistic diseases associated with immunodefi ciency such as Kaposi' s sarcoma (a rare form of skin cancer), pneumonia (generally caused by Pneumocystis carinii), and retinitis (caused by cytomegalovirus).