“…Clinically, pityriasis versicolor can resemble other dermatologic disorders, and differential diagnosis should include vitiligo (particularly in patients with dark skin and hypopigmented lesions), tinea corporis (in this instance, the causative organism is a dermatophyte rather than a yeast as in pityriasis versicolor), SD, pityriasis rosea, pityriasis alba, chloasma, erythrasma, confluent and reticulated papillomatosis of Gougerot and Carteaud, pityriasis rotunda, 66-68 secondary syphilis, and pinta. Although pityriasis versicolor is most commonly seen on the trunk and arms, it may also occur on the face, 69 scalp, 70,71 and other areas of the body, 72,73 either in addition to the more common distribution of lesions or as the sole area of involvement.…”