Which condition is characterized by a loss of full control of bodily movements?

Ataxia is a neurological condition that specifically involves a lack of coordination and balance, resulting in an inability to control bodily movements effectively. This can manifest in various ways, such as unsteady walking, difficulty with fine motor skills, and problems with eye movements. The term 'ataxia' derives from the Greek word meaning 'lack of order,' which accurately captures the disorganized movements that characterize this condition.

In contrast, the other conditions mentioned have distinct features. Dysphasia refers to difficulties with language and communication, without a direct impact on motor control. Dysarthria involves issues with the physical production of speech due to muscle weakness, affecting articulation rather than overall movement coordination. Dysphagia relates to difficulties in swallowing, which may not necessarily involve gross motor control but rather the mechanics of ingesting food and liquids. Thus, ataxia stands out as the condition that specifically denotes a loss of control over movements.