The main causes of pain in the right side of the brain are as follows: 1. Migraine on the right side, common in young and middle-aged people, especially women, in addition to the painful throbbing symptoms on one side of the head, sometimes accompanied by nausea, vomiting, photophobia, phantom vision and other aura symptoms, often related to exertion, cold or emotional changes. 2. Herpes zoster neuralgia on the right side, you need to pay attention to whether there is a blister-like right side of the brain. 3. acute cerebrovascular disease on the right side, such as hemorrhage or large infarction in the right cerebral hemisphere, can cause painful symptoms in the brain. 4. rare causes, including neuralgic manifestations such as occipital neuralgia, manifesting as neuropathic or pins-and-needles-like or throbbing pain in the right side of the brain and posterior occipital region.