Kallgren Dermatologists in Boulder are the dermatologists to turn to for skin disorders or any problem you are having that affects your comfort in your skin. Problems that we treat here in Boulder include everything from adolescent acne to psoriasis.

Skin Pigment Disorders

We often see people when they’ve noticed a change in their skin pigment. Skin pigment is a function of melanin in each of the skin cells and is triggered under normal circumstances by the absorption of sunlight. Everyone, except people with albinism, has melanin in every skin cell as well as other parts of the body, including deep in the brain. The melanin in the skin cells absorbs the UV radiation from the sun and provides protection from the UV radiation, though the connection between pigment and protection for the harmful rays of the sun is still being studied.


There are several well-known disorders relating to the pigment that we see at our dermatology clinic. One disorder we see with frequency is melasma. One issue we see is frequently is melasma. Nationwide, there are more than 200,000 cases a year. According to the American Academy of Dermatology, melasma “causes gray-brown patches on the face.” Melasma, also known as pregnancy mask, is associated with estrogen and progesterone imbalances. The hormone changes that take place during pregnancy can cause this condition. Other causes are birth control pills and sun exposure with the use of sunscreen, avoidance of sun exposure. Skin lighteners are also used to even out patches. If caused by pregnancy, it often goes away on it’s own. If you think you may have melasma, call Kallgren Dermatology for an appointment. To learn about more common disorders of the pigment of the skin, check back for our next blog.