An example of hyperpigmentation is melasma (also known as chloasma). This
condition is characterized by tan or brown patches, most commonly on the face.
Melasma can occur in pregnant women and is often called the "mask of
pregnancy;" however, men can also develop this condition. Melasma frequently
goes away after pregnancy. It can also be treated with certain prescription
creams (such as hydroquinone).
Read more about hyperpigmentation and hypopigmentation skin conditions.