Figure 2. Bilateral linear porokeratosis treated with topical cholesterol/lovastatin ointment.

Before treatment, the patient presented with bilateral erythematous and hyperkeratotic plaques distributed in a linear form in the upper extremities. After 12 weeks of treatment of the right arm with topical cholesterol/lovastatin, the patient achieved a smoother texture with some residual post-inflammatory hyperpigmentation compared to baseline. The untreated left arm remained unchanged.