A 46-year-old woman to the physician for treatment of her plaque psoriasis. She is prescribed topical calcipotriene and triamcinolone. She asked the physician about UV-A light therapy, which she says worked well for her cousin, who also has plaque psoriasis. Which of the following findings, if present in this patient, would make this latter therapy contraindicated?
Cataracts
Erythema nodosum
Melasma
Mycosis fungoides
Porphyria cutanea tarda
Vitiligo
