LPP is generally a chronic, relapsing condition(keep reoccurring) with periods of exacerbations (worsening symptoms) separated by periods of remission (a decrease in or disappearance of symptoms). Treatment for lichen planus pigmentosus is generally symptomatic and may include. Topical (applied to the skin) corticosteroids Topical calcineurin inhibitors (medications that are typically used to treat eczema) Skin lightening agents Laser therapy...since you are already on treatment continue the same and be in regular fallow up with your dermatologist