<prompt> Causes of localized hypopigmented macule or patch are all except -VitiligoPiebaldismPityriasis albaFreckle  <response>: Freckles are small 5 mm in diameter, circumscribed, poorly marginated, labile, pale brown macules that appear exclusively on the sun exposed skin of a fair complexioned individual. The term ephelides is also used to describe freckles. others piebaldism, vitiligo and pityriasis alba produce hypopigmentes macules IADVL textbook of dermatology , pigmentary disorders page 772 