Many possibilities: If you are otherwise healthy, it may just be you are impinging your Trigeminal nerve on the left side, but it may be a sign of an electrolyte deficiency (usually though would happen in day too), it may be a sign of lack of blood flow, or another nerve issue, go see your doctor. IF weakness in facial muscles or slurred speech with this go to hospital.
Answered 9/28/2016
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A doctor has provided 1 answer
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