“Melasma is a very common condition in pregnancy and is due to hyperpigmentation related to normal hormonal changes that accompany pregnancy. It can also be caused by oral contraceptives and is more common in dark-skinned persons.

High-potency broad-spectrum sunscreens may help prevent melasma, or at least prevent worsening of the condition  (SOR  C).  Topical  retinoids,  hydroquinone,  and  corticosteroids  can  also  be  helpful,  but  are usually reserved for postpartum use and require months of treatment. Other treatments include azelaic acid, chemical  peels,  kojic  acid,  cryosurgery,  and  laser  treatment  (SOR  B).  Melasma  usually  improves spontaneously after delivery, but it may be prolonged or worsened by oral contraceptive use. It does not increase the risk of developing skin malignancies.

Ref:     Tunzi M, Gray G: Common skin conditions during pregnancy. Am Fam Physician 2007;75(2):211-218.  2) Habif TP:Clinical Dermatology: A Color Guide to Diagnosis and Therapy, ed 5. Mosby Elsevier, 2010, pp 772-774.” ABFM

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