Tumors that occur inside the skull are called brain tumors. Brain tumors can occur at any age, with two peaks of incidence around the age of 10 and 30 to 40. The most common site of brain tumors is the subcerebellar vermis in children and the supracerebellar vermis in adults. Common symptoms of brain tumor include: Headache Headache is the most common and the earliest symptom of intracranial tumor. Headache of brain tumor is not serious in the early stage, with the passage of time, the headache also intensifies, which is often unbearable to the patients and cannot be solved by general pain relief drugs. Headache mostly starts in the morning after waking up, can be paroxysmal or persistent, and can be aggravated by coughing and exertion. The site of pain varies according to the tumor site, and it can be located on one side of the head or all of the head. Generally speaking, supratentorial tumors are found in the temporal lobe, while infratentorial tumors are found in the occipital region, the back of neck and orbital region. Edema of the fundus of the eye The cause of edema of the optic nerve papilla is due to increased intracranial pressure, which blocks the return of lymphatic fluid from the lymphatic sheaths around the optic nerve, as well as increased venous pressure in the optic nerve with venous filling. The presence of edema in the fundus of the eye can have an effect on vision, and prolonged damage to the optic nerve can lead to optic nerve atrophy and blindness. Vomiting Caused by direct pressure or stimulation of the medullary vomiting center or vagus nerve. This symptom is common in subepithelial tumors, especially in children. Vomiting is projectile and occurs frequently with worsening headache. About 60% of patients with brain tumor may vomit, which is not related to diet and is not necessarily accompanied by nausea before vomiting. The attack mostly occurs in the morning or when the headache is the most intense, and the headache may be slightly relieved after vomiting. Vertigo: The patient feels that the objects around him are rotating or spinning, followed by headache, nausea, vomiting and discomfort. Dizziness and tinnitus may occur with increased intracranial pressure, inner ear edema, or tumor invasion of the auditory nerve. Persistent drowsiness is common with severe hydrocephalus or tumors near the thalamus. In addition, some patients may have seizures, psychiatric symptoms, diplopia, neck tonus, and decreased corneal reflexes.