Derm Dx: Itchy maceration between the third and fourth toes

A 33-year-old otherwise healthy male presents complaining of foul-smelling, itchy and macerated skin between his third and fourth toes. He is not sure how long he has had the problem.

The patient works as a meat-packer and wears waterproof rubber boots as part of his work uniform. He has tried washing between his toes with antibacterial soap, but the skin ...