What happened to the pain on the left side of the head?

Pain on the left side of the head may be occipital neuralgia, the pain caused by this disease generally lasts for a few seconds, can suddenly stop, can be repeated attacks, patients sometimes can attack several times a day or even hundreds of times, severe pain, affecting the patient's life and work, its exact etiology is not clear, mainly nerve demyelination changes caused by abnormal nerve discharge, can use some symptomatic painkillers, such as oral carbamazepine, oxcarbazepine. Radiofrequency ablation and local nerve block may also be considered if the drug is not effective and the patient has frequent seizures. If the patient has a lesion in the left posterior cranial fossa, such as a brain tumor, this may also be manifested and a brain MRI should be performed to confirm it.