A variety of medical conditions, such as Parkinson's disease and stroke, that decrease patients' ability to control oral or facial muscles can cause hypersalivation, or sialorrhea, states American Family Physician. It is also a common symptom in children who have neurological impairments, including cerebral palsy and mental retardation.
Excessive salivation can create a range of social and physical complications, according to American Family Physician. Dehydration, odor and chapping are frequent consequences of the condition. Many patients also experience severe embarrassment and anxiety due to the condition, leading to decreased social interactions. Treatment options include conservative measures, such as postural adjustment, or more aggressive clinical approaches, including surgery or Botox injections.
Pregnancy can also lead to hypersalivation, reports Gynaeonline. The condition is usually limited to the first trimester. Although doctors have not pinpointed an exact cause for hypersalivation during pregnancy, possible explanations are increased hormones, hyperacidity, heartburn or morning sickness.
Hypersalivation presents an ongoing struggle for many patients with amyotrophic lateral sclerosis, states ALS Association. Use of a suction machine along with adjustment of fluid intake can keep saliva flow manageable. Prescription drugs may also be helpful to control the condition and reduce patient anxiety about choking, especially during the night.