Speech impairment is an early symptom of Parkinson's disease (PD). This study has summarized the literature related to speech and voice in detecting PD and assessing its severity.
![](https://static.wixstatic.com/media/04ef19_3a296f110a7648ab890df5ea2d66777d~mv2.jpg/v1/fill/w_147,h_98,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/04ef19_3a296f110a7648ab890df5ea2d66777d~mv2.jpg)
Speech impairment is an early symptom of Parkinson's disease (PD). This study has summarized the literature related to speech and voice in detecting PD and assessing its severity.