A child presents with sudden onset of red spots on body. There is history of precceding viral infection 1-4 weeks before the onset of red spots. Lab investigations shows Hb-12gm%, WBC-11,000 Platelet count – 50,000. Which of the following is not useful for the management of this condition?

**Core Concept**
The child's presentation suggests a diagnosis of acute post-streptococcal glomerulonephritis (APSGN), a complication of streptococcal pharyngitis or skin infections. APSGN is characterized by sudden onset of red spots (petechiae or purpura), which are indicative of platelet consumption, along with renal involvement and thrombocytopenia.

**Why the Correct Answer is Right**
The correct answer is related to the management of APSGN. The primary goal of management is to support renal function, manage hypertension, and prevent further complications. Platelet transfusion is not a standard treatment for APSGN, as the thrombocytopenia is usually self-limiting and resolves with treatment of the underlying cause.

**Why Each Wrong Option is Incorrect**
**Option A:** Corticosteroids may be used to reduce inflammation in severe cases of APSGN, but they are not a first-line treatment and may have adverse effects.
**Option B:** Rest and hydration are essential in the management of APSGN, as they help to reduce the strain on the kidneys and prevent further complications.
**Option C:** Antibiotics are not directly useful in the management of APSGN, as the condition is a complication of a previous infection, but they may be used to treat any concurrent infections.

**Clinical Pearl / High-Yield Fact**
The presence of a preceding viral infection can make the diagnosis of APSGN more challenging, as the viral infection may also cause a rash. However, the presence of thrombocytopenia and renal dysfunction (as indicated by the low platelet count and normal WBC count) should raise suspicion for APSGN.

**Correct Answer:** D. Platelet transfusion is not useful for the management of APSGN.

✓ Correct Answer: A. Platelet transfusion