Hello! Pigmentation is a very broad term which means any change in skin color which may be darker or lighter. A darker discoloration as compared to surrounding skin is called as hyperpigmentation. Tanning is a type of hyperpigmentation. Medicines, sunscreens and procedures like peels, Microdermabrasion ans q switch laser can restore ur normal skin tone.

Tan because of sun...use kojivit gel at night, along with the following medicine.... Please send photos  of the affected part for accurate diagnosis and treatment.. Consult on  private chat or meet me in my clinic for detailed information and prescription.