The left face feels a little numb: 1, can be considered due to some inflammatory reaction of the peripheral nerve of the face, generally can be seen in the infection or after contact with some substances, for this situation can generally recommend the patient to take some oral nerve-nourishing B vitamins. 2, the left face feels a little, if it is sudden, clinically can also be seen in cerebrovascular disease, can be seen in the right thalamus infarction and microscopic Hemorrhage, or ischemic or hemorrhagic lesions of the brainstem. For cerebrovascular disease, if the lesion is large, the patient may also have other symptoms of neurological deficits. 3, the left face feels a little numb, clinically it can also be seen in the early stage of peripheral facial neuritis, generally due to viral or bacterial infection of the facial nerve, resulting in the facial nerve symptoms of this neurological deficit. The patient first feels numbness on the left side of the face, and after about 2-3 days, there is a loss of facial muscle activity. 4, the left side of the face feels a little numb, clinically there are some patients with herpes zoster, in the 2-3 days before the herpes, the patient will also have this symptom of local numbness.