Gangrene of limb
Gangrene of limb may be with oedema or without oedema. If it
is oedematous mostly the cause is infective or venous obstruction. If the gangrene
is not associated with oedema then the common causes are vasospastic or thrombo-embolic.
Raynauds phenomenon could be due to collagen diseases, Burgerís disease, cold
agglutinin, cryoglobulinaemia , neurogenic etc.