What conditions could lead to numbness on the left side of my face?

When numbness occurs on one side of the face—such as the left—it often involves irritation or damage to facial nerves. Some of the most common causes include:

Bell’s palsy: A temporary weakness or paralysis of facial muscles due to inflammation of the facial nerve, often with numbness or tingling. Trigeminal neuralgia: A nerve disorder that affects sensation in the face, sometimes causing numbness, tingling, or sharp pain. Migraine with aura: Some people experience numbness or tingling on one side of the face before or during a migraine. Stroke or transient ischemic attack (TIA): Sudden numbness, especially if paired with slurred speech, facial drooping, or weakness, may be a medical emergency. Multiple sclerosis (MS): A neurological condition that can affect facial sensation if certain nerves are involved. Dental or sinus issues: Infections or procedures in these areas can irritate nearby nerves and cause numbness. If the numbness is sudden, worsening, or associated with other neurological symptoms (like weakness, vision changes, or speech difficulties), seek immediate medical care.