Conditions associated with sialorrhea:
(1) Parkinson's disease
(2) atypical parkinsonian syndromes
(3) amyotrophic lateral sclerosis (ALS)
(4) cerebral palsy
(5) pseudobulbar palsy
(6) stroke
(7) uncorrected developmental disorders of the head and neck
(8) tumors in the mouth, oropharynx or esophagus
Factors contributing to sialorrhea:
(1) overproduction of saliva
(2) tilting forward of the head (so that the saliva pools forward)
(3) oropharyngeal obstruction (large tongue, tumor, etc)
(4) facial or oropharyngeal muscle weakness
(5) difficulty swallowing
