Numbness of the left half of the face may be caused by trigeminal neuritis, or it may be caused by cerebral infarction, or it may be caused by tumor compression.
1. Trigeminal neuritis: Trigeminal nerve is the sensory nerve of the face, when trigeminal neuritis occurs in the left trigeminal nerve due to viral infection and other factors, the patient may have the symptom of numbness in the left half of the face.
2. Cerebral infarction: cerebral infarction is a kind of ischemic infarction disease of the brain substance, if the facial sensory center in the central back of the right cerebral cortex ischemic infarction, the patient may also have the symptom of numbness of the left half of the face.
3. Tumor compression: if the left trigeminal nerve is compressed by auditory nerve sheath tumor, it can also lead to the symptoms of numbness of the left half of the face, and the patient can also have dizziness, tinnitus, hearing loss and other symptoms.
In addition to the above diseases, other factors can also lead to the symptoms of numbness of the left half of the face, it is recommended to consult a doctor in time to find out the cause and ask the doctor to deal with it.