Hyperchromias appear as dark stains throughout the skin, from superficial pigmented lesions to deeper occurring marks. Typically, hyperchromias are mixed. In other words, the same person can have both superficial and deeper stains, the latter being more difficult to treat.
Hyperchromias can be classified as follows:
• Post-inflammatory hyperchromias: Stains due to local trauma, with a deposit of dark pigment (hemosiderin).
• Melasma: Blotchy pigmentation of facial skin over the sun-exposed areas.
• Chloasma: Stains that appear during gestation with the same characteristics as melasma.
• Senile hyperchromias or ephelides/freckles: Round or circular stains—dispersed into the face, hands, and arms, caused by ultraviolet light.
All hyperchromias can be provoked and/or worsened by the sun, pregnancy, oral contraceptives and certain photosensitizing drugs. Various modalities have been reported to treat solar lentigines, such as lasers, dermabrasion, epidermabrasion, cryotherapy, and chemical peelings.
Silvia Karina Kaminsky, M.D.
General Medical Director of Centro
Dermatológico SkinLaser – SP, Brazil
To Download the Complete Clinical Bulletin for GentleLASE® for Treatment of Hyperchromias, click here.