Excess salivation may be a result of hypersecretion (primary sialorrhea) of the salivary glands but is more commonly due to impaired neuromuscular control with dysfunctional voluntary oral motor activity that leads to an overflow of saliva from the mouth (secondary sialorrhea). Patients often have inefficient and infrequent swallowing, which further compounds the problem...Consult nearest physician they will do the needful if needed they will only refer you to the concerned speciality.