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Pyoderma gangrenosum ulcers demonstrate pathergy, that is, a worsening in response to minor trauma or surgical debridement. Significant care should be taken with dressing changes to prevent potentially rapid wound growth.
The inflammation and ulceration that occurs as a result of pathergy in pyoderma gangrenosum often responds to systemic steroid therapy. The pathergy reaction is a unique feature of Behçet's disease and, according to the International Study Group for Behcet's Disease, is among the major criteria required for the diagnosis.
Pyoderma gangrenosum is variably expressed, which means that it is not always present in all individuals with the disease. It presents as poorly healing ulcers with undermined edges. Pathergy is an important feature (this term refers to the tendency of ulcers to arise at points of injury).
A chronic wound is a wound that does not progress through the normal stages of wound healing ... pyoderma gangrenosum, and diseases that cause ischemia. [2] ...
Cutaneous vasculitis, pyoderma gangrenosum, [1] calciphylaxis [2] Martorell's ulcer , also known as hypertensive leg ulcer or necrotic angiodermatitis , [ 1 ] is a painful ulceration of the lower leg associated with diastolic [ citation needed ] arterial hypertension .
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