This kind of situation is called "insect spot" in folk, and pityriasis albicans in medicine, also known as pityriasis simplex and pityriasis streptococci, which is a common skin disease of children and adolescents. At present, the cause of the disease is not very clear, and it is considered to be a kind of nonspecific dermatitis, which may be related to streptococcus infection. The pathogenesis may be related to the immature development of sebaceous glands in children and the lack of sebum protection on the skin surface. The child is malnourished and lacks vitamin B in the body; Excessive cleaning, especially cleaning with strong alkaline soap, is also one of the causes of white pityriasis. In addition, sun exposure and dry skin may promote the occurrence of this disease. The main manifestation of this disease is round or oval plaques in hypopigmentation, which mostly grow on the face, mouth, cheeks and forehead, but also on the neck, shoulders, arms, chest and arms. A few patients may have mild itching, but most patients have no obvious symptoms. Pityriasis albicans has little effect on health except for its beauty. The disease can last for several months to a year, and the white spots will last for more than many years after the scales subside. The white pityriasis on some children's faces will sometimes naturally improve, but the color of local skin will still be slightly lighter than the surrounding skin.

Some people think that the white spots on children's faces are related to parasites in the intestines, but they are not necessarily related. Children with white spots on their faces, 70% have no bugs in their bellies.

Pityriasis albicans generally does not need special treatment, let alone "killing insects". Keep your face clean, don't use too alkaline soap, and use some oily moisturizing cream in dry season. If the child feels itchy or uncomfortable, he can apply sulfur ointment or hormone cream. For malnourished children, it is necessary to adjust the diet structure, increase food types, supplement vitamins, and take B vitamins under the guidance of doctors when necessary, which can alleviate or make leukoplakia fade.

Reference: www.iiyi.com.