Probably weakness: There's no way to know without seeing it but usually synkinesis is the yoking of the movements of the eye and mouth: when you smile you blink and vice versa but only on the damaged side. Twitching of a previously damaged area is likely residual weakness from the injury or continued irritation. Would be tough to get isolated lip irritation from a craniotomy injury. I would go with weakness
Answered 1/15/2015
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