A white patch on the baby’s face may be pityriasis albuginea. The cause of pityriasis albuginea is not clear and may be related to sun exposure, malnutrition and vitamin deficiency. White pity rash is usually found on the face of children, and the rash is a round or oval-shaped rash with a diameter of about 0.5-3cm and fuzzy borders. The rash can appear light red at first, gradually become light white, generally no conscious symptoms, a few people will have mild itching. The rash usually does not require treatment, but can be treated with topical sulfur ointment or a weak glucocorticoid ointment if the rash is more frequent. In addition, white spots on the forehead or between the eyebrows that are the size of green beans to yellow beans may also be lichen planus, which is caused by a fungal infection and can be treated with topical antifungal creams.