Coffee spot

Cafe spots (cafe-au-lait-spots), also known as coffee milk spots, are light brown patches that can be found at birth. The depth is not affected by the sun, and the size ranges from a few millimeters to tens of centimeters. The boundaries are clear and the skin texture is completely normal. Observed under a microscope, its performance is very similar to freckles, mainly manifested by an abnormal increase in the amount of melanin in the epidermis.