Question: Can you identify this condition?

A 48-year-old male patient presents with an acute eruption of well-defined, tender, erythematous and edematous papules and plaques on the upper extremities, chest, and back. Fever, arthralgia, and general malaise accompany the eruption. Laboratory findings include peripheral neutrophilic leukocytosis and an elevated erythrocyte sedimentation rate.

The most likely diagnosis is

1. Erythema nodosum

2. Sweet syndrome

3. Guttate psoriasis

4. Pyoderma gangrenosum

5. Acute generalized exanthematous pustulosis

Answer on page 1251