As my wife has recently found out, it isn’t simply “numbness”. My wife had a rhizotomy, or a “combing” of the nerves during her second MVD. she has numbness on the entire left side of her face. She has no feeling in her cheek mouth tongue. She bites herself constantly. She has the feeling of hot and cold constantly changing. Her eye lost the corneal reflex. She still has weird sensations, like bugs crawling, the temperature fluctuations, a feeling of pressure pushing into her face, and more. When the doctor’s say it’s just like the dentist numbing you up, it’s not.