Which Hoehn and Yahr stage is described as 'Bilateral symptoms, no postural instability'?

Which Hoehn and Yahr stage is described as 'Bilateral symptoms, no postural instability'?

• A. Hoehn and Yahr Stage I
• B. Hoehn and Yahr Stage II
• C. Hoehn and Yahr Stage III
• D. Hoehn and Yahr Stage IV

Answer: (B)

The main idea here is how the Hoehn and Yahr scale uses how widespread the symptoms are and whether balance is affected to assign a stage. Bilateral symptoms with no postural instability means the disease affects both sides of the body, but balance is still preserved. This corresponds to Stage II, where symptoms are on both sides without impairment of balance and the person remains physically independent. It’s different from Stage I (unilateral symptoms), Stage III (bilateral symptoms with some postural instability), and the later stages (more severe disability or dependence). So the description fits Stage II.

The main idea here is how the Hoehn and Yahr scale uses how widespread the symptoms are and whether balance is affected to assign a stage. Bilateral symptoms with no postural instability means the disease affects both sides of the body, but balance is still preserved. This corresponds to Stage II, where symptoms are on both sides without impairment of balance and the person remains physically independent. It’s different from Stage I (unilateral symptoms), Stage III (bilateral symptoms with some postural instability), and the later stages (more severe disability or dependence). So the description fits Stage II.