Cutaneous abscess by Trichosporon asahii developing on a steroid injection site in a healthy adult.

We report a rare case of cutaneous abscess by Trichosporon asahii in an immunocompetent adult. A 31-year-old Korean woman presented to our hospital with a cutaneous abscess. She had received an intralesional steroid injection 4 months earlier on the site of a hypertrophic scar. Direct sequencing of the intergenic spacer regions of the rRNA genes identified T. asahii. The decreased local immunity after the steroid injection might have triggered the infection by T. asahii. A cutaneous abscess formation by T. asahii in an immunocompetent patient is an unusual cutaneous finding that to our knowledge has not been reported previously. The local immune reaction of the skin is important for the prevention of Trichosporon infection.