Rough and thickened vulvar skin may be related to chronic eczema, lichen planus or chronic lichen simplex. 1. Chronic eczema: when acute or subacute eczema is prolonged, pimples, scratches or scales appear on the skin of the vulva, anus and other parts of the vulva, and the local skin may be thickened and rough, accompanied by varying degrees of moss-like changes. 2. Lichen planus: mainly manifested as vulvar itching, burning sensation, the appearance of lesions from the grid-like papules to erosive desquamation can be present, in the late stage, there can be pigmentation, skin hyperkeratosis can be thickened. 3. Chronic lichen simplex: also known as neurodermatitis, when occurring in the vulva, scrotum or perianal area and other parts of the easy to scratch, there can be polygonal flat papules, reddish color, long time skin thickening and roughness, with pigmentation, presenting a moss-like changes. There are many reasons for vulvar skin roughness and thickening, if you have any discomfort, we suggest that you consult a doctor in time, and follow the doctor’s instructions for symptomatic treatment.