A randomized control study of the prevention of hyperpigmentation post Q-switched Nd:YAG laser treatment of Hori nevus using topical fucidic acid plus betamethasone valerate cream versus fucidic acid cream.

Background: Post-inflammatory hyperpigmentation (PIH) after laser treatment of Hori nevus remains problematic. Prevention and treatment of PIH have limited success.

Objective: To study the effects on hyperpigmentation using topical antibiotic alone versus combined antibiotic and betamethasone/valerate after 1064 nm Q-switched Nd:YAG laser treatment of Hori nevus.