This patient has an ataxic gait. Note his wide-based and unsteadiness.
About ataxic gait
Patients with ataxic gait have a wide-based, unsteady gait with an uneven stride length. This is the gait disorder seen in persons with alcohol intoxication.
Localization
Ataxic gait is usually due to dysfunction of the cerebellum, especially the midline cerebellum, or vermis. This can occur due to structural lesions, such as stroke or tumors, degenerative disorders or toxic derangements, such as alcohol intoxication. Another cause of ataxic gait is severe proprioceptive sensory loss. These patients do not know where their feet are in space. Sensory ataxia often improves with visual cueing.