A 45-year-old man has pus-filled vesicles distributed over his back in the upper right quadrant,over his right shoulder,and upper right quadrant of his chest.His symptoms are most likely due to

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The distribution of pus-filled vesicles on the back, shoulder, and chest is typical of herpes zoster (shingles), which is caused by the reactivation of the varicella-zoster virus. Candida albicans is a fungus that causes skin and mucous membrane infections but does not typically present with vesicles. Herpes simplex virus typically causes grouped vesicles on the lips or genital region. Staphylococcus aureus and Streptococcus pyogenes are bacterial causes of impetigo, which presents with honey-colored crusts rather than vesicles.

A 45-Year-Old Man Has Pus-Filled Vesicles Distributed Over His Back