I explain how melasma appears as reticulated hyperpigmented patches with a lace-like pattern, typically on the cheeks, upper lip, forehead, and neck. I contrast this with post-inflammatory hyperpigmentation (PIH), which presents as well-demarcated areas of pigmentation in places where there was previous trauma, such as acne scars or improperly done laser treatments. #melasma #hyperpigmentation #dark spots #sunspots