According to the National Institutes of Health, some main reasons why someone would experience numbness of the face include improper positioning, nerve injury, stroke, vitamin deficiencies, insect bites, migraines and multiple sclerosis. If the facial numbness is persistent and does not go away, it's important to seek qualified medical care for a proper diagnosis and treatment plan.
When an individual experiences facial numbness, it may be combined with a variety of other symptoms depending on their specific condition. Certain problems, such as numbness caused by improper positioning, will go away on their own. Other health conditions that cause numbness need to be properly diagnosed and treated by a doctor for the symptoms to go away.
Certain situations, such as paralysis, head injuries, slurred speech and lack of consciousness combined with facial numbness need emergency attention because they can be fatal, according to the National Institutes of Health.
During a doctor's appointment to determine the cause of the facial numbness, the doctor will go over the patient's medical history, perform a physical examination and discuss any additional symptoms the patient may be experiencing. Certain testing may also be performed to rule out the cause of the problem, and these may include blood tests, X-rays, CT scans and MRI scans. Once the doctor properly diagnoses the problem, he or she will be able to construct a proper treatment plan.