Thanks for your question, Numbness in face can occur with the damage or dysfunction of the branches of the cranial nerve supplying the face region (trigeminal nerve). Less commonly, it can be due to certain brain dysfunctions or can be psychogenic. Dysfunction of the facial nerve (as in Bell s Palsy) will usually not cause numbness as it carries innervations for the muscles of the face and not sensations from the skin. Other causes are Peripheral Neuropathy, Multiple Sclerosis, Nerve Injury (Trauma, Positional), Migraine, Transient Ischemic Attack, Stroke, Brain Tumors and etc. so i sugest that you go for CT scam to find out more about the cause of the numbness. thanks