All are seen in Henoch schonlein purpura except ?
## **Core Concept**
Henoch-Schönlein purpura (HSP) is a form of **vasculitis** that affects blood vessels and is characterized by the deposition of **IgA immune complexes**. It primarily affects children and young adults, manifesting with symptoms such as purpura, arthritis, abdominal pain, and renal involvement.
## **Why the Correct Answer is Right**
The correct answer, , is not typically seen in Henoch-Schönlein purpura. HSP is characterized by palpable purpura, arthritis, abdominal pain, and renal involvement. The condition is known for its **IgA immune complex** deposition, which is not a feature of option .
## **Why Each Wrong Option is Incorrect**
* **Option A:** is a common manifestation of HSP, presenting as **palpable purpura** due to inflammation of small blood vessels.
* **Option B:** can occur due to **IgA immune complex** deposition in the kidneys, leading to **Henoch-Schönlein nephritis**.
* **Option C:** is often seen, with patients experiencing **arthralgias** and **arthritis**, typically affecting large joints.
## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that HSP often follows a **gastrointestinal infection**, and **IgA** levels may be elevated. A classic presentation includes the tetrad of **purpura, arthritis, abdominal pain, and renal involvement**.
## **Correct Answer:** .