Parkinson's Knowledge 2

Question 1

Which neurotransmitter is primarily deficient in Parkinson's disease?

Accepted Answer

Dopamine

Answer

Parkinson's disease is caused by the progressive loss of dopamine-producing neurons in the substantia nigra.

Question 2

What are Lewy bodies, commonly found in the brains of Parkinson's patients?

Accepted Answer

Abnormal protein aggregates containing alpha-synuclein

Answer

Lewy bodies are abnormal clumps of misfolded alpha-synuclein protein that accumulate inside neurons.

Question 3

Which stage of the Hoehn and Yahr scale indicates bilateral involvement without impairment of balance?

Accepted Answer

Stage 2

Answer

Stage 2 on the Hoehn and Yahr scale describes bilateral motor symptoms without balance impairment.

Question 4

What term describes the reduced or absent facial expression commonly seen in Parkinson's disease?

Accepted Answer

Hypomimia

Answer

Hypomimia (also called 'masked face') refers to reduced facial expressiveness due to motor rigidity.

Question 5

Which type of tremor is most characteristic of Parkinson's disease?

Accepted Answer

Resting tremor

Answer

A resting tremor — one that occurs when the limb is at rest — is the hallmark tremor of Parkinson's disease.

Parkinson's Practice Test