What condition can side effects such as ataxia hinder in equine patients?

Ataxia refers to a lack of coordination or control over movements, which can significantly impact a horse's overall mobility. In equine patients, side effects like ataxia primarily hinder the ability to walk. This condition results from neurological issues or inflammation, affecting the horse's equilibrium and gait.

When a horse experiences ataxia, its ability to execute precise movements is compromised, making it difficult to balance and navigate while walking. This can lead to falls or injuries and may prevent the horse from performing everyday activities, including walking to feed or water sources. Therefore, among the options provided, the ability to walk is most directly affected by the symptoms of ataxia in equine patients.

While ataxia could have secondary effects on running or eating due to compromised mobility, the direct relationship is clearly strongest with walking, as this is the fundamental action required for maintaining a horse's movement and stability in day-to-day life. Sleep might be indirectly influenced if the horse cannot find a comfortable position due to its inability to walk properly, but it is not as immediate or directly challenged by the condition.