Histopathology shows hyperkeratosis, acanthosis, follicular dilation, neutrophilic microabscesses, and a mixed dermal infiltrate with multinucleated giant cells. In one case report, treatment was ...

The disease starts out with a single erythematous patch on the upper half of the body and within a few weeks or months, there are large zones of follicular hyperkeratosis each with an erythematous ...