What's with the pain in the left side of the back of the head?

The pain on the left side of the head may be caused by pain in the left greater occipital nerve. The exact cause of the disease is unclear. It may be caused by viral infection or by vascular compression stimulating the greater occipital nerve. If there is organic lesion in the posterior cranial fossa, it may also compress the greater occipital nerve. The patient will also show the above symptoms. Generally, it is more common in the lesions of the posterior cranial fossa. If necessary, check the brain MRI for a clear diagnosis. If it is considered to be primary greater occipital neuralgia, symptomatic treatment is mainly carried out. The patient can take carbamazepine, phenytoin sodium, oxcarbazepine, radio frequency ablation and local nerve block treatment when necessary, and give B vitamin nutrition nerve therapy. The commonly used drugs are vitamin B12 and mecobalamin. If it is considered to be caused by secondary causes, such as space-occupying lesions, surgery or radiation therapy can be carried out. For benign space-occupying lesions, surgery is generally considered. For malignant lesions, radiation therapy is required.