Ataxia is defined by which of the following?

Ataxia is defined by which of the following?

• A. Hair loss
• B. Lack of voluntary muscle coordination
• C. Inflammation of the eye
• D. Itching

Answer: (B)

Ataxia is about a disruption in coordination and balance, not simply weakness or other symptoms. It reflects problems with the cerebellum or its connections, so movements become unsteady and imprecise. In animals, this shows up as an unsteady gait, a wide-based stance, irregular stepping, tremors that worsen with movement, and difficulty with precise, fine motor tasks like reaching or tail-fine positioning. The other signs listed—hair loss, eye inflammation, and itching—are unrelated to coordination and point to skin or ocular issues rather than problems with motor control. So the defining feature of ataxia is the lack of voluntary muscle coordination.

Ataxia is about a disruption in coordination and balance, not simply weakness or other symptoms. It reflects problems with the cerebellum or its connections, so movements become unsteady and imprecise. In animals, this shows up as an unsteady gait, a wide-based stance, irregular stepping, tremors that worsen with movement, and difficulty with precise, fine motor tasks like reaching or tail-fine positioning. The other signs listed—hair loss, eye inflammation, and itching—are unrelated to coordination and point to skin or ocular issues rather than problems with motor control. So the defining feature of ataxia is the lack of voluntary muscle coordination.