Mid-and Long-term Efficacy of Ergot Alkaloids in the Treatment of Salivation in Patients With Parkinson's Disease.

Parkinson's disease is the second most common neurodegenerative disease after Alzheimer's disease, the incidence of population over 60 years old in China is 1.37%, Parkinson's disease is often accompanied by various non-motor symptoms, such as salivation. Salivation can occur at any time in Parkinson's disease, with an incidence of 32% to 74%, often leading to social embarrassment, skin infections, bad breath, aspiration pneumonia, etc. This not only reduces the quality of life of patients, but also increases the burden on caregivers. Salivation can improve symptoms with botulinum toxin injections, medications, and non-drug treatments. Dihydroergot mesylate has been shown to be effective in the treatment of salivation in patients with Parkinson's disease, and this study will further observe the medium- to long-term efficacy of the drug on salivation symptoms.