RT Book, Section A1 Usatine, Richard P. A1 Jimenez, Adeliza S. A2 Usatine, Richard P. A2 Smith, Mindy A. A2 Mayeaux, Jr., E.J. A2 Chumley, Heidi S. SR Print(0) ID 1164359593 T1 Tinea Corporis T2 The Color Atlas and Synopsis of Family Medicine, 3e YR 2019 FD 2019 PB McGraw-Hill Education PP New York, NY SN 9781259862045 LK dermatology.mhmedical.com/content.aspx?aid=1164359593 RD 2024/03/29 AB A 30-year-old woman presents to a family physician with a rash on most of her forearm that is now encroaching on her hand. She states that it has been going on for 6 months and that 2 months ago she went to an urgent care where she was given two creams to apply to the rash. Fortunately, she had the creams with her, and Figure 144-1 shows the two creams adjacent to the eruption. The physician diagnosed tinea incognito. The urgent care provider recognized the original eruption as fungal but did not know that nystatin only treats Candida and not the dermatophytes that cause tinea corporis. Therefore, the nystatin was useless and the triamcinolone contributed to the rapid growth of this "fungus on steroids." The patient was given 4 weeks of oral terbinafine 250 mg daily, and the tinea incognito cleared completely.