Always drooling may be physiological, but also may be caused by oral inflammation, facial paralysis, swallowing dysfunction and other pathological factors.
1. Physiological factors: infant drooling is a natural phenomenon, with growth and development will be naturally cured. In addition, congenital salivary glands are developed to produce more saliva, can also be seen in the elderly, due to the relative relaxation of facial muscles can not tightly close the lips, thus producing drooling.
2. Oral inflammation: such as gingivitis, salivary gland inflammation, pharyngitis, etc. can stimulate excessive secretion of oral glands, resulting in pain, drooling and other symptoms.
3. Facial paralysis: Patients with peripheral facial paralysis and some central facial paralysis have weak control of facial muscles and the corner of the mouth on the affected side is drooping, which may cause frequent drooling.
4. Swallowing dysfunction: It can be seen in cerebrovascular diseases such as cerebral infarction, etc. After the formation of cerebral thrombus, it can cause the dysfunction of local muscles in the pharyngeal cavity, resulting in swallowing dysfunction and the symptom of always drooling, which can be accompanied by slow response and slurred speech.
Excluding physiological factors, if often drooling, it is recommended to consult a doctor in time, combined with other symptoms of a clear diagnosis and active treatment, so as not to delay the condition.