Ephelides is essentially a type of freckling on the
skin. The appearance of the colored spots, or
freckles, is due to collection of
pigment in skin cells (keratinocytes). Ephilides occurs most in the
summer months because of
exposure to the sun, and the spots usally fade by the
winter as the new skin cells form and exposure to the sun is more limited. Protection from the sun is the only real treatment for it. A
sunscreen with a high
SPF (
Sun Protection Factor) is best.
Source: http://www.emedicine.com/derm/topic121.htm