What condition is associated with hypersensitivity vasculitis and hemorrhagic urticaria?

What condition is associated with hypersensitivity vasculitis and hemorrhagic urticaria?

• A. Henoch-Schönlein purpura
• B. Behçet's disease
• C. Lupus erythematosus
• D. Dermatomyositis

Answer: (A)

Henoch-Schönlein purpura is a small-vessel vasculitis that is primarily seen in children and is characterized by a tetrad of symptoms: palpable purpura, often around the buttocks and legs, abdominal pain, arthralgia, and renal involvement. A key feature of this condition is the presence of hypersensitivity vasculitis, which involves immune-mediated inflammation of small blood vessels leading to symptoms like skin rashes and purpura. Hemorrhagic urticaria, which refers to wheals that may become purpuric due to extravasation of blood, is also associated with this condition. The skin manifestations of Henoch-Schönlein purpura can resemble urticaria, but the critical difference is the underlying mechanism of small vessel inflamed and damaged tissue leading to bleeding into the dermis, causing the characteristic skin changes. Other conditions, while potentially presenting with skin symptoms, do not specifically encompass the same combination of hypersensitivity vasculitis and hemorrhagic urticaria as the hallmark of Henoch-Schönlein purpura.

Henoch-Schönlein purpura is a small-vessel vasculitis that is primarily seen in children and is characterized by a tetrad of symptoms: palpable purpura, often around the buttocks and legs, abdominal pain, arthralgia, and renal involvement. A key feature of this condition is the presence of hypersensitivity vasculitis, which involves immune-mediated inflammation of small blood vessels leading to symptoms like skin rashes and purpura.

Hemorrhagic urticaria, which refers to wheals that may become purpuric due to extravasation of blood, is also associated with this condition. The skin manifestations of Henoch-Schönlein purpura can resemble urticaria, but the critical difference is the underlying mechanism of small vessel inflamed and damaged tissue leading to bleeding into the dermis, causing the characteristic skin changes.

Other conditions, while potentially presenting with skin symptoms, do not specifically encompass the same combination of hypersensitivity vasculitis and hemorrhagic urticaria as the hallmark of Henoch-Schönlein purpura.