How common is complex regional pain syndrome (CRPS)?
CRPS affects about 1 in 4,000 people each year. CRPS can affect any age but is more common between the ages of 40 and 60 years. It can also affect children, although is very rare in children aged younger than 6. The number of CRPS cases among teenagers and young adults is increasing. Although CRPS can start after a minor injury, it is more common after an injury to a nerve or after a fracture.