One side of the mouth always feel saliva actual no symptoms may be a stroke, facial peripheral neuritis and other diseases caused by. 1. Stroke: stroke is also known as stroke, ischemia and hypoxia of brain tissue and peripheral blood vessels caused by dizziness, numbness of the hands and feet, crooked corners of the mouth and some other symptoms. Due to the lack of blood circulation in the local brain tissue, it will lead to cerebral nerve dysfunction, so that the sense of taste in front of the tongue will be impaired, which will cause abnormal sensation at the corner of the mouth. 2. Facial peripheral neuritis: when the face is cold or windy, it will stimulate the facial nerve and make the innervated area have sensory disorders, which will lead to the symptom that one side of the corner of the mouth always feels that there is saliva but there is no saliva. In short, there are many reasons for the abnormal sensation of the corner of the mouth, and it is recommended to go to the regular hospital for standardized examination in order to make a clear diagnosis.