Complex regional pain syndrome Complex regional pain syndrome
(CRPS) is a chronic pain condition that can affect any area of
the body, but often affects an arm or a leg. CRPS; RSDS;
Causalgia - RSD; Shoulder-hand syndrome; Reflex sympathetic
dystrophy syndrome; Sudeck's atrophy Doctors aren't sure what
causes CRPS. In some cases, the sympathetic nervous system plays
an important role in the pain. Another theory is that CRPS is
caused by a triggering of the immune response, which leads to
the inflammatory symptoms of redness, warmth, and swelling in
the affected area. CRPS has two forms: - CRPS 1 is a chronic
nerve disorder that occurs most often in the arms or legs after
a minor injury. - CRPS 2 is caused by an injury to the nerve.
CRPS is thought to result from damage to the nervous system,
including the nerves that control the blood vessels and sweat
glands. The damaged nerves are no longer able to properly
control blood flow, feeling (sensation), and temperature to the
affected area. This leads to medical