SMAS 15 months ago. Post-op RHS of face tighter than LHS, altered sensation at the medial commissure of R eye, ear deformities.

Past year on RHS face: I've a gritty eye, numb lids, a funny sensation affecting nasal lining, slight drooling from right side mouth and right eye now watering from lateral commissure. No obvious damage to VII. Severity of the symptoms varies daily. Took gabapentin which helped a little. Stopped it in June. Mid- July the above symptoms spontaneously resolved and drooling lessened. In the last 2 weeks it's all come back so restarted gabapentin and increased the dose. What's causing symptoms?

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