A Distal Dermatitis

Can you identify this acral eruption of a week's duration on a 3-year-old boy?

A 3-year-old boy is seen for an acral rash of 7 days’ duration-an eruption of symmetric, flesh-colored monomorphous papules on arms, legs, buttocks, and face. Moderately enlarged, tender cervical lymph nodes are palpated.

What is the most likely diagnosis?