Lichen Planus Pigmentosus in North Africa: A Series of 17 Cases

The study reported on 17 cases of lichen planus pigmentosus (LPPig) in Moroccan patients, highlighting its presence in North Africa, a region where it was previously underreported. The study included 1 man and 16 women, with a mean age of 57.4 years. The condition predominantly affected the face, particularly the perioral area and forehead, and was associated with frontal fibrosing alopecia in 41% of cases. Some patients also had thyroiditis or diabetes mellitus. Histological analysis confirmed pigment incontinence and basal vacuolization. Treatment with tranexamic acid and topical hydroquinone showed limited success, with only 4 patients achieving complete resolution. The study concluded that LPPig is a challenging pigmentary disorder to treat, and its prevalence in North Africa may be underestimated.