A 6 month old infant had itchy erythematous papule and exudative lesions on the scalp, face, groins and axillae for one month. She also had vesicular lesion on the palms. The most likely diagnosis is –

**Core Concept**
The question requires the application of dermatological knowledge to diagnose a skin condition in an infant. The **clinical presentation** of itchy erythematous papules, exudative lesions, and vesicular lesions on specific body parts suggests an allergic or infectious etiology.

**Why the Correct Answer is Right**
Given the description, the most likely diagnosis is **scabies**, a parasitic infection caused by the mite **Sarcoptes scabiei**. The presence of vesicular lesions on the palms is a characteristic feature of scabies in infants. The distribution of lesions in the scalp, face, groins, and axillae also supports this diagnosis.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because the description does not match a typical viral exanthem.
**Option B:** Incorrect as it does not typically present with vesicular lesions on the palms.
**Option C:** Incorrect because the clinical presentation does not align with a bacterial infection.

**Clinical Pearl / High-Yield Fact**
Scabies in infants often involves the scalp and face, which is less common in adults, and the presence of vesicular lesions on the palms is a distinctive feature.

**Correct Answer:** D. Scabies.

✓ Correct Answer: C. Scabies