Explain why the outward appearance of a patient with akinetic mutism can be misleading, and why this matters for how the condition is assessed.

A patient with akinetic mutism lies with eyes open, giving a superficial appearance of alertness that can easily be mistaken, at a glance, for a patient who is simply choosing not to move or speak, as in psychiatric stupor. This is misleading because underneath that open-eyed appearance is a genuine, organic lowering of the level of consciousness, not an intact awareness accompanied by profound behavioural inhibition. Because the outward picture does not reliably signal what is actually happening to consciousness, careful assessment — checking reactivity to painful stimuli, and later checking for amnesia for the episode — is essential, and given the specific, localisable brain lesions associated with this pattern, urgent neurological assessment is warranted rather than an assumption that this is simply a psychiatric presentation.