Sweating in the neck and chest may be due to factors such as high ambient temperature, hyperhidrosis, and vegetative nerve disorders. 1. High ambient temperature: If the patient is exposed to high temperature for a long period of time, the ambient temperature may be too high, which may cause sweating in the neck and chest where the sweat glands secrete vigorously. 2. Hyperhidrosis: the symptom of sweating in the neck and chest may be caused by hyperhidrosis, which may result in an abnormal increase in local or generalized skin sweating. 3. Plant nerve disorder: some patients may be due to mental tension, excessive psychological pressure and genetic factors, resulting in plant nerve disorders, which can lead to sweating in the neck and chest, dizziness and headache, insomnia and forgetfulness and other symptoms of plant nerve disorders. Sweating in the neck and chest may also have other causes, so if necessary, you need to cooperate with the doctor to improve the relevant examination to determine the cause before treatment, do not blindly use drugs.