Flat warts on the face usually look like round or oval flat raised papules. Flat warts are caused by human papillomavirus (HPV) infection and appear as round or oval flat raised pimples emanating from the surface of the skin, most commonly on the face and back of the hands. Most of the papules have a smooth surface, hard texture and vary in size. They may be as large as grains of rice or soybeans and appear suddenly in dense clusters. Bead-like papules may form along the scratch marks after scratching. The actual warts are usually not obvious, the early papule distribution area is small, the color is close to the skin color or slightly darker, the middle papule distribution area gradually increased, the color is light brown or dark brown, the late papule color can be gray-brown. If you have a suspicion of flat warts on your face, it is advisable to go to the hospital and get a clear picture of the cause of the warts, and then get the right treatment under the guidance of the doctor.