<prompt> Reflex sympathetic dystrophy true is-OsteoporosisIncreased skin tempCommon in athletesVasoconstriction  <response>: Ans. is a i.e., Osteoporosis o RSD is a condition that features a group of typical symptoms, including pain often burning type, tenderness, and swelling of an exterimity associated with varying degrees of sweating, warmth andor shiny skin. It is an abnormal sympathetic response following trauma. This is commonly encountered in colies fracture. However, RSD may be seen in other injuries also.Clinical manifestations of RSDo The onset of the RSD symptoms may be rapid or gradual. There are several stagesStage 1 Acute :- Burning pain, flushing, sweating, swelling, erythema, increased heat, hyperesthesia, spotty osteoporosis.Stage 2 dystrophic :- Cyanotic extremity, thickened shiny skin, Increased sweating hyperhidrosis, contracture; but diminished swelling flushing. There is diffuse osteoporosis. Stage 3 Atrophic :- Stiffness of joints, contracture of the involved hand or foot. Pale cool extremity, skin is dry, tight skin, homogenous osteoporosis with thinned cortices at the joint.Prognosiso The prognosis varies from person to person. Spontaneous remission from symptoms occur in certain people. Others can have unremitting and crippling, irreversible changes inspite of treatment.Treatment of RSDo Physical therapy :- gradually increasing exercise programo Psychotherapyo Sympatholytic drugs :- Phentolamine a - blocker, Propranolol p-blockero Sympathetic nerve block :- Stellate ganglion block for upper extremity RSD and L,- L. block for lower extremity,o Medications :- Topical analgesics, antidepressants, corticosteroids, opioids, o Surgical sympathectomy. 