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Allergic vasculitis is a hypersensitivity small-vessel vasculitis caused by infection, drugs or chemicals. It presents with polymorphic skin lesions (purpura, papules, nodules, ulcers) and systemic symptoms (fever, arthralgia, renal/GI involvement).
Palpable purpura; skin papules/nodules/ulcers; fever; arthralgia; renal involvement
Immune-complex deposition in small vessels after antigen exposure causes leukocytoclastic vasculitis.
Remove trigger; corticosteroids; immunosuppressants if severe
Avoid known allergens/drugs; treat infection.
It is recommended to visit the Rheumatology department; an appointment can be booked on this platform before the visit.
Warm reminder: The above information is for health science reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek medical attention at a regular hospital promptly.
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