Sudden growth of nevus on face may be caused by benign nevus of junction, seborrheic keratosis or basal cell carcinoma.
1. Benign junctional nevus: due to long time exposure of facial skin to ultraviolet rays, cells containing pigment are distributed in the junction of epidermis and dermis, forming benign junctional nevus, which is generally benign, but there is a possibility of malignant lesions.
2. Seborrheic keratosis: it may be related to sun exposure, chronic inflammation stimulation, etc., which may cause the facial lesions to be one or several yellowish or light brown flat papules or plaques that are slightly higher than the skin surface.
3. Basal cell carcinoma: the etiology is unknown, may be related to gene mutation, ultraviolet radiation and other factors, often manifested as sudden appearance of brown or light brown plaque or papule or nodule on the face, and some of them may be broken.
Sudden growth of nevus on face may also be caused by sclerosing hemangioma. If the symptoms are serious, you should go to the hospital in time and under the guidance of the doctor, and should not use medication by yourself so as not to delay the condition.