Pediatric eczema, commonly known as tinea cruris. Its causes are complex and it is an allergic skin disease. Infants The skin is not yet well developed, the outermost epidermis of the stratum corneum is thin, the capillary network is rich, and the endothelium is rich in water and chloride, so it is easy to have an allergic reaction. There are many causes of eczema, mainly: 1, allergy to cow and goat milk, beef and lamb, fish, shrimp, eggs and other foods; 2, overfeeding and indigestion; 3, eating too much sugar, resulting in abnormal intestinal fermentation; 4, intestinal parasites; 5, strong light exposure; 6, soap, cosmetics, fur, fine fibers, pollen, oil and knee stimulation; 7, the mother contact with allergic factors or eat certain foods, through the milk affect the baby; 8, eczema also has a genetic predisposition. , eczema also has a genetic predisposition. Generally speaking eating breast milk baby eczema is relatively light, the larger baby in the addition of complementary foods such as beef and mutton, fish, shrimp, eggs, etc. are likely to cause eczema, or make the original eczema aggravated. Eczema often begins to appear within 3 months of the baby’s age and gradually heals itself after 1 to 1.5 years of age. If parents have allergic diseases, baby eczema can be extended to children and even adults, and the condition should be repeated, sometimes light and sometimes heavy, and become chronic eczema.