Which of the following is a characteristic of Parkinson's Disease?

• A. Increased VC and Forced Vital Capacity
• B. Ability to inhale fully due to relaxed muscles
• C. Speech that is monotonous and low in intensity
• D. Enhanced movement of the rib cage

Answer: (C)

Parkinson's Disease is characterized by a number of motor symptoms, one of which affects speech production. Individuals with Parkinson's often exhibit a speech pattern that is monotonous and low in intensity. This occurs due to the disease's impact on the neurological control of speech, leading to decreased vocal intensity and a reduction in pitch variation. The reduced ability to modulate voice can result in speech that lacks the natural fluctuations and expressiveness typically found in healthy communication.

This characteristic is significant because it directly correlates with the disease's effects on motor control and muscle function associated with speech. Patients may struggle to project their voice, which can contribute to communication difficulties and affect social interactions. Recognizing this symptom is crucial for diagnosis and treatment planning.