Neck sweating rash itchy symptoms, consider and sweat stimulation, prickly heat, contact dermatitis and other factors. 1. Sweat stimulation: some patients with sensitive skin, may be in hot weather, strenuous exercise and other circumstances, resulting in increased blood circulation, and then there will be more sweating symptoms, sweat stays in the neck for a longer period of time, will produce local stimulation, rash and itching symptoms. 2. Prickly heat: mainly occurs in the hot summer, usually because of the environmental temperature is too hot, long-term bedridden and other reasons lead to the blockage of the sweat ducts, resulting in the neck sweating more, accompanied by red rash and itching symptoms. 3. contact dermatitis: skin in contact with external substances, may cause inflammatory skin diseases, and neck sweating does not have much to do with, for example, the patient will be in contact with detergents, insect bites, chemicals, and so on, thus stimulating the local appearance of red rash and itching symptoms. Neck sweating rash itchy symptoms, but also need to cooperate with the doctor to further improve the examination, there may be other reasons, diagnosed and then do the treatment.