Intracranial tumors, also known as brain tumors, include primary brain tumors and secondary brain tumors that metastasize to the skull from other parts of the body. The incidence of brain tumors is about 7-9/100,000, which is not very high, but both benign and malignant ones can squeeze and push the normal brain tissue, causing intracranial pressure to rise and threaten life. 35 to 60 years old patients have the highest incidence of brain tumors, accounting for more than 70% of all brain tumors, while the peak is between 35 and 45 years old. The causes of brain tumors are still unclear, and all that can be done at this time is to strive for early detection and treatment. Headache, nausea, vomiting Headache is a very common symptom, which can be caused by cold, high blood pressure, poor rest, emotional excitement and vascular neurological factors. Among many diseases that cause headache, the most insidious and dangerous one is brain tumor. Most headaches in brain tumor patients occur at night and early in the morning, especially in the morning when the pain is most obvious, and they are often woken up in the middle of sleep. After getting up, the headache gradually relieves or disappears, so it is called “early morning headache”. In the early stage, it is often intermittent, with throbbing pain and swelling, and each attack lasts for several minutes or hours. When the tumor continues to grow, the pain may turn into localized severe, persistent and gradually aggravated, and accompanied by jet vomiting, and the headache worsens when coughing, sneezing or defecating. 2.Hemiparesis, cone bundle damage Symptoms of hemiplegia or single limb weakness or paralysis on the opposite side of the tumor, with positive pathological signs. 3. Hemiplegia and hemiplegic sensory impairment: position perception, two-point discrimination perception, graphic perception, material perception and solid perception of the limb contralateral to the tumor. Some cases have aura before convulsions, such as temporal lobe tumor, seizures are often preceded by fantasy, vertigo and other aura, and parietal lobe tumor seizures may be preceded by abnormal sensations such as numbness of limbs. In addition, primary epilepsy is more common in children, and if it starts in adulthood, we should be alert to brain tumors. According to the survey, more than 1/3 of brain tumor patients have different types of seizure symptoms during the onset. 5.Progressive vision loss of unknown cause Intracranial tumor compressing the optic nerve or squeezing the eye will cause vision loss or refractive changes, resulting in visual impairment such as vision loss or blurred vision. According to statistics, 41% of patients with intracranial saddle area tumors have first symptoms of vision loss and visual field defects. It is often misdiagnosed as glaucoma, primary optic nerve atrophy, retrobulbar optic neuritis, retinitis and refractive error. And often early treatment will have some efficacy, thus giving a more false impression. 6.Endocrine disorder The pituitary gland is the endocrine organ of human. The growth of tumor can cause endocrine disorder, which can lead to menstrual disorder and infertility in women and sexual dysfunction in men, mainly manifesting as decreased libido and impotence, etc. Meanwhile, pituitary tumor can also cause obesity, acromegaly and facial changes in patients. Due to the lack of medical knowledge, patients often delay their illness. Hearing loss is mostly caused by auditory nerve sheath tumor, which is represented by auditory neuroma, and the early symptoms of patients are usually inaudible in one ear when talking on the phone and tinnitus. If the tumor enlarges, facial numbness will appear, and if the disease develops further, unstable walking, even hoarseness and choking cough will appear. 8.Symptoms of cerebellum and brainstem mainly include ataxia, unstable walking, staggering gait, hoarseness, water choking and coughing, and difficulty in swallowing. Once the above symptoms appear, you should promptly consult a doctor and perform cranial CT and MRI to achieve early detection, early diagnosis and early treatment.