Freckles may be described as flat, round, dark colored spots that range in size from about 2mm to 4mm. Freckles could be the result of pigment precipitation in one particular place, as generally the skin surrounding the spot is lighter in color. Freckles have a hereditary aspect to it and you are likely to inherit it if runs in your family. Freckles are usually of no medical consequence and do not cause any problems. Freckles are sensitive to the UV rays of sunlight and hence appear more prominent during or after exposure to sunlight. Though freckles could be present all over the body, mostly they are found in areas exposed to sun.
Ephelides – These are flat red or light-brown spots that typically appear during the summer months and fade away in the winter. These types of freckles could be hereditary.
Lentigines – Lentigines may be small tan, brown or black spot that is darker than an ephelide. This does not fade in winter. This is also a genetic condition.