White rice-like dots appear on the body, need to carefully observe the form, touch the white with your hand if it does not raise the skin, simply arranged in dots on the surface of the body, need to identify whether the surface has obvious flakes. 1, if there are tiny flakes on the surface, consider fungal infection formed by lichen planus, may also be white pityriasis, need to do fungal testing, if fungal positive can be identified as lichen planus, need to choose to use Antifungal drugs for treatment, if fungus negative need to supplement vitamin, can effectively relieve white pityriasis, if the epidermis is smooth without flakes consider is punctate pigment loss, may be related to skin aging. 2, if white around pigmentation consider is vitiligo, white particles obviously raised in the skin consider is sebaceous gland ectopia, may also be densely arranged fat particles, if white dots accompanied by strong Itching consider is early eczema, dermatitis.