Possible Clues:

• Get in the grass and one is not steady
• Walks drunkenly
• This disease of horses throws one off balance
• Arranges in an alternating pattern
• 'Egg-whisk' leads on the outside... stumbles
• Such a disease in horses takes the breath away
• Form of vertigo associated with decompression sickness
• Reels from famous actors, holding back urge
• Disease of horses characterised by a swaying unsteady gait
• Is unsteady and one bowls over