Lyme arthritis

• migratory polyarthritis
• common in New England (named for Lyme, Conn.)
• spirochete (Borrelia) transmitted by tick (Ixodes dammini)

• joint effusion, esp. knee (may be only finding)
• skin lesions: erythema chronicum migrans

© 2002, C.E. Kahn, Jr.
2002-04-18