Tingling on the left side of the head may be caused by herpes zoster, migraine, cerebral vasospasm, etc. Patients can clarify the cause of the disease under the guidance of a professional doctor and treat it with the appropriate medication. 1. Herpes zoster: patients may have clusters of tiny blisters on the scalp, accompanied by paroxysmal tingling, patients can take carbamazepine, gabapentin and other drugs to relieve the pain, and at the same time, they can take methylcobalamin and other medications to nourish the nerves. 2. Migraine: patients are also prone to pain on one side of the body during a migraine attack, which may be accompanied by nausea, vomiting, stomach upset and so on when it is severe, patients can take ibuprofen, diclofenac sodium and other drugs to relieve pain. 3. Cerebral vascular spasm: If the patient’s blood vessels on the left side of the head spasm, it is also easy to appear on the left side of the head tingling symptoms, and in severe cases there may be dizziness, limitation of limb movement and other symptoms. Patients can use drugs such as nimodipine and fasudil hydrochloride for anti-spasm treatment. Patients are advised to seek timely medical attention when the pain persists and follow the doctor’s instructions for standardized treatment.