Lecithin cannot be used to treat neurodermatitis. Lecithin, also known as phosphatidylcholine and lecithin, consists of a glycerol group, a fatty acid group, a phosphate group, and choline, and is found mainly in egg yolks, soy peanuts, fish, animal offal, and dairy products. Lecithin has amphiphilic and antioxidant activity and can be used in the maternal and infant population, but has no role in the treatment of neurodermatitis. Neurodermatitis can be treated with oral antihistamines (e.g., loratadine), sedatives (e.g., glutathione) to stop the itching, or topical antipruritic ointments (e.g., glycerite lotion). Lecithin has no pharmacologic effect in the treatment of neurodermatitis. If you need to use the drug, it is recommended to use the drug under the guidance of a doctor, not blindly self-medication to avoid adverse effects.