Which condition is associated with the inability to perform the Romberg test?

The assessment of the Romberg test primarily evaluates a person's balance and proprioception, particularly their ability to maintain an upright posture with their eyes closed. This test involves asking the individual to stand with their feet together and arms at their sides, first with eyes open and then with eyes closed.

Cerebellar ataxia is characterized by a lack of coordination and balance, stemming from dysfunction within the cerebellum, which is responsible for motor control and coordination. In individuals with cerebellar ataxia, the proprioceptive feedback is impaired, leading to significant difficulties in maintaining balance, especially when sensory input is reduced, such as when the eyes are closed during the Romberg test. Thus, individuals with cerebellar ataxia would struggle significantly to perform this test effectively, often exhibiting swaying or falling.

Other conditions listed may present with balance issues, but they do not specifically reflect the inability to perform the Romberg test to the same extent as cerebellar ataxia does. For instance, patients with Parkinson's disease may have balance challenges, particularly during dynamic activities, but they may still manage the Romberg test to some degree. Similarly, spastic hemiparesis and foot drop can affect gait and stability but do