What could be the reason for numbness in one side of my face?

Reviewed by Yoshinori Abe, MD

Internal Medicine

One-sided facial numbness can result from several conditions, most commonly trigeminal neuropathy (nerve damage or irritation), carotid artery problems affecting blood flow, or a small stroke in the brain. Because these causes range from manageable to medically urgent, prompt evaluation by a doctor is essential to identify the underlying issue and begin appropriate treatment.

Since facial numbness can signal anything from a minor nerve issue to a serious neurological event, understanding your symptoms early can make a real difference in outcomes. Take a free, instant, online symptom check to clarify what may be causing your numbness and guide your next steps with confidence.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Learn why one-sided face numbness happens Discover if your face numbness needs care Find likely causes of sudden face numbness See OTC options for face numbness relief Find a doctor for face numbness Understand home remedies for face numbness Find out if facial numbness is serious

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Explanation

Feeling numb on one side of your face can happen for different reasons. One possible cause is trigeminal neuropathy, which affects a nerve in your face. This nerve problem can make parts of your face feel numb or tingly. Another possible reason is problems with the carotid artery, which is a big blood vessel in your neck. If this artery has issues, it might cause numbness or strange feelings in your face.

Another serious cause can be a small stroke in the brain, known as a lacunar pontine ischemic stroke. This type of stroke can make one side of your face feel numb. It happens when a small blood vessel in the brain gets blocked.

If you notice numbness in your face, it's important to see a doctor. They can help figure out what's causing it and what to do next. To better understand your symptoms and get personalized guidance, you can check your symptoms with our free AI symptom checker. Remember, these are just some possibilities, and a doctor can provide the best advice.

(References)

Smith JH, & Cutrer FM. (2011). Numbness matters: a clinical review of trigeminal neuropathy. Cephalalgia : an international journal of headache, 21628435.
Francis KR, Williams DP, & Troost BT. (1987). Facial numbness and dysesthesia. New features of carotid .... Archives of neurology, 3827688.
Brigo F, Tomelleri G, Bovi P, & Bovi T. (2012). Hemiparesthesias in lacunar pontine ischemic stroke. Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 21910003.

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