Dermal Melanocytosis

If you have noticed a bluish or grayish coloring on the skin that seems to be in deep layers, it could be dermal melanocytosis, an accumulation of pigment cells (melanocytes) in the dermis. It is a frequently benign finding, as occurs with the well-known Mongolian spot in babies.

How it presents: It presents as flat areas of a blue-gray or slate tone, common in the lower back or buttocks of newborns, although it can be seen in other areas.

When to seek care? An evaluation is useful when the spot is extensive, persists beyond what is expected or one wishes to confirm its nature.

Which specialist treats it? The dermatologist, and in children the pediatric dermatologist or the pediatrician, are the ones who examine dermal melanocytosis; a general practitioner can guide the initial visit. For greater peace of mind, it is advisable for a professional to review the lesion.