Patients with white spots on the body, may be due to prolonged sun exposure and idiopathic hypopigmentation, generally more regular shape of white spots, but if patients appear large white spots or accompanied by other skin symptoms, may be caused by other diseases, more common are vitiligo, simple furuncle, lichen planus, anemic nevus, senile leukoplakia, post-inflammatory hypopigmentation, etc.: 1. Vitiligo: often The white spots are often milky white or porcelain white pigment loss spots with clear borders. The white spots vary in size, and with the development of the disease may appear in patches, generally not accompanied by other skin symptoms, the skin surface is relatively smooth, no dander, etc.; 2, simple pityriasis: belongs to the chronic scaly skin disease, manifested as round, oval patches, light red or skin color, the surface has bran-like scales, erythema fades after the remains of mild pigmentation fading pale spots, more often seen in children; 3, lichen planus It is often a skin disease caused by fungal infections, and appears as lesions of a pattern or white spots, accompanied by small flakes of skin, often symmetrically distributed; 4.Anemic nevus: it is caused by local abnormalities of skin blood vessel function, and usually does not grow larger, and the white spots become less obvious when pressed; 5.Ageing White spots: the natural degeneration of skin pigmentation with age, forming round white spots on the skin surface, mostly on the trunk of the limbs; 6, post-inflammatory hypopigmentation: post-inflammatory hypopigmentation is a disease secondary to skin inflammation, which is manifested as white spots on the skin surface due to reduced pigmentation at the lesion. The appearance of white spots can also be seen in roundworm infection resulting in roundworm spots, commonly found in children, can be accompanied by abdominal pain, grinding teeth at night and other symptoms, generally after deworming treatment, can be relieved. It is recommended that patients with white spots on the body go to the dermatology department of a regular hospital for relevant examinations in a timely manner to clarify the cause and provide early treatment to prevent further development of the disease.