Sudeck's atrophy is associated with

Reflex sympathetic dystrophy Also called as Sudecks dystrophy or Complex regional pain syndrome - 1 Disabling disorder of unknown pathophysiology with a variable symptom complex and many hypothesized causes and mechanismsFeatures of CRS - 1Intense /exaggerated pain Vasomotor disturbanceDelayed functional recoveryHyperhidrosis, Osteopenia, Atrophic skin changesLankford and Evan stagining Stages Duration Features Acute Initial 3 months Pain & Swelling Sub-acute 3 - 9 monthsPain, stiffness & osteopenia on X ray Chronic After 9 months Diminished pain with extreme osteopenia (Refer: Mohindra's Fundamentals of Ohopedics, 2nd edition, pg no. 97)