After the ultraviolet radiation on the neck appeared millet grain-shaped bumps, consider sunlight allergic dermatitis, with three nine dermatitis flat ointment rub the affected area, go out wearing sunscreen clothing, reduce the stimulation of ultraviolet radiation on the skin. After replacing the high-necked clothes, allergic to the fabric of the clothes, resulting in the neck long rice-like red bumps, you can take paracetamol orally, rub the affected area of tretinoin urea cream, replace the cotton, low-necked clothes. The reason for this is the fact that it is not easy to find a way to get a good deal of money from a company that has a lot of money to spend. Regardless of which of the above causes of this situation, in the treatment period need to pay attention to diet, spicy, seafood and other skin irritating food do not eat.