Mussitation came from the Latin word “mussatio” which literally means “ceasing to speak”. It is the movement of lips, as if one is talking or murmuring, but without sound. This condition is observed to be presented by patients with Parkinson’s disease, delirium, and semi-coma. For instance, a patient in a coma seems to be forming words with his lips, as if whispering something, but without accompanying sound.

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