Osteoperiostitis due to secondary yaws (Q89610)

Osteoperiostitis occurring during the course of secondary yaws typically presents with nocturnal bone pain and swelling affecting either the proximal phalanges of the ?fingers (dactylitis) or the long bones (forearm, tibia or fibula). The process normally affects several bones and is thus polyostotic; early bone changes are usually visible by plain radiography and periosteal thickening is often palpable. In contrast with the destructive osteitis of tertiary yaws, the osteoperiostitis of secondary yaws is generally reversible following treatment.