This is accompanied by simultaneous ipsilateral (same side)
numbness of the
tongue. This
numbness is caused by compression of the second cervical root (C2) in the atlantoaxial space.
Occipital neuralgia, TIA or ministroke, trigeminal neuralgia should also be looked into.
Common cold, sinusitis, ear infection, sensory nerve compression, peripheral neuropathy as in diabetes, inflamed wisdom tooth, impacted wisdom tooth etc can all cause facial numbness and pain.