What you described is a pretty usual form of pain. The compression of a sensory nerve on one point implies pain on the area of its innervation.
The trigeminal nerve is the fifth cranial nerve, it has a left and a right connection, each has both motor and sensory functions. Seems the sensory part (the most sized) of it is compressed. Its innervation goes almost everywhere around the head, from the very back of it to the chin (including ears, muscles for mastication, talking, swallowing (pharynx etc)).
The cause of compression are many. Could be an accident, could be a hernia, could be psychologic problems or just a natural anatomic (mis)placement...
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