Intracranial tumor is one of the common diseases endangering human health. 2/3 of intracranial tumors are metastases from other parts of the body to the cranium, and the other 1/3 are tumors of intracranial origin. Many patients with early headache, dizziness, vision loss and other symptoms are regarded as cervical spondylosis, cold and other diseases and delay the early diagnosis and treatment of the disease. Unknown to many patients, the earlier the intracranial tumor is detected, the better the prognosis is after surgical treatment. Many intracranial malignant tumors, such as glioma, have no special discomfort in the early stage, and the symptoms become more and more serious with the increasing size of the tumor and cystic degeneration, and then they come to the hospital for treatment, and even some patients come to the hospital to do a CT or MRI examination to diagnose the existence of intracranial tumors when they have pain that is intolerable. Common benign intracranial tumors include: meningioma, acoustic neuroma, pituitary tumor, etc. Malignant tumors such as metastatic tumor, glioma, lymphoma, etc. Different tumors can grow in different parts of the body. Different tumors can grow in different parts of the body and of different sizes, thus causing different symptoms to occur. For most of the intracranial tumors can be completely cured by surgical treatment and the life can be restored to normal. Therefore, we should pay great attention to the occurrence and existence of intracranial tumors, so the early detection of intracranial tumors is quite important. Then, what physical discomforts often indicate the occurrence of intracranial tumors when we have them? The author has summarized the common symptoms of intracranial tumors as follows, please read carefully, pay attention to yourself and your friends and relatives around you, kindly remind them and urge them to go to the hospital to do a cranial CT or magnetic resonance MRI (MRI has greater diagnostic value if the conditions allow). 1.Headache and dizziness are progressively aggravated. The most common symptom of many intracranial tumors in early stage is headache and dizziness, of course, the symptom that causes headache does not necessarily indicate the existence of tumor, and it lacks specificity, because cold and flu will cause headache; poor sleep, too much pressure will cause headache; bad mood may also have headache. However, when headache worsens progressively and is accompanied by nausea and vomiting, it needs to be taken seriously. This is especially true if the headache is accompanied by the other symptoms listed below. Most of the intracranial tumors will have obvious headache when the tumor grows bigger and bigger with occupying effect and edema. Vision loss or blurred vision. Many patients with vision loss think that it is myopia or presbyopia, or ophthalmological diseases go to ophthalmology, but the result is that MRI suggests that there are tumors in the saddle region. Most tumors located in the saddle region grow large enough to affect the optic nerves bilaterally, or optic nerve or optic nerve crossings, or even visual conduction pathways, and tumors anywhere in the region can cause vision problems – vision loss or diplopia. Common tumors include pituitary tumors, craniopharyngiomas, optic nerve gliomas, pterygoid crest meningiomas, saddle-node meningiomas, and even giant Circle of Wilis aneurysms. Most of these tumors can be surgically relieved of the compression on the optic nerve so that the vision can be restored to a certain extent. 3. Tinnitus, unilateral or bilateral hearing loss. The occurrence of this symptom often indicates the existence of acoustic neuroma, acoustic neuroma occurs in the Schwann cells of the auditory nerve, and often grows in the CPA area of the bridge cerebellar angle area, the tumor grows to the internal auditory canal, strictly speaking, the acoustic neuroma should be called acoustic nerve sheath tumor, which is one of the common benign tumors in the cranial area, and the patients often manifest tinnitus and buzzing in the ears at the early stage. Later, as the tumor grows and enlarges, hearing loss begins to occur. The most common type of acoustic neuroma is on one side of the ear, and in some patients, the tumor may grow on both sides at the same time. When the tumor is larger than 3cm and there are symptoms of hearing loss, it is recommended to have open surgery to remove the tumor, and the common postoperative complications are facial paralysis due to facial nerve injury, dysphagia and choking on drinking water due to posterior nerve injury. 4, hemiplegia, muscle strength loss, limb sensory impairment. Unilateral limb weakness or numbness may be the result of lesions involving intracranial motor or sensory functional areas, or spinal cord lesions. Tumors such as meningiomas, gliomas, and metastatic tumors are often seen in central motor areas such as the parietal anterior and posterior gyri of the brain. It is often characterized by progressive loss of muscle strength and sensation in the limbs. It can also be caused by tumor growth in the brainstem, near thalamus and the whole spinal cord, cauda equina, etc. Commonly, there are brainstem glioma, ventricular meningioma, spinal meningioma, neurofibroma, spinal cord nerve sheath tumor, and so on. 5.Walking instability and ataxia. Unsteady walking, poor fine limb movement, poor limb coordination function, etc., mostly suggest the existence of cerebellar tumor. Common tumors in children are medulloblastoma, cerebellar hemisphere hairy cell astrocytoma. In adults, there are cerebellar gliomas and ventricular meningiomas in the ventricles of the four cerebral compartments. There are different degrees of symptom disappearance and relief after surgery. 6.Secondary epileptic seizures. If the patient excludes meningitis, history of trauma, history of cerebral hemorrhage, and there are symptoms of foamy mouth, confusion, tonic convulsions of limbs, and wakes up as normal after a few minutes, the existence of intracranial tumor should be highly suspected. In general, tumors growing in the temporal, parietal, and frontal cortical areas are more likely to produce epilepsy. If the tumor is the epileptogenic cause of epilepsy, resection of the lesion should be performed, and most of the patients’ epileptic symptoms will be controlled, while a small number of patients may continue to take oral antiepileptic drugs in the later stage. 7. Decrease in sexual function and menstrual disorders. Normal male adults such as sexual function decline, some patients do not go to the clinic due to shyness, some go to the male department to see the sex clinic, but the symptoms are not much better, until there is a loss of vision, only to the ophthalmology or neurosurgery to consult the doctor, and take a picture to find pituitary tumors or other tumors of the saddle region. Of course, not every pituitary tumor has a decrease in sexual function. Here we are talking about prolactin-type pituitary tumors, in which men experience a decrease in libido and scanty hair, and female patients commonly experience menstrual disorders or lactation, or even menopause. When the tumor grows up, it will compress the optic nerve and cause vision loss. Therefore, if the above sexual problems occur, do not hesitate to be shy and go to the hospital, be alert to pituitary tumor or other saddle region tumors! Pituitary tumor is divided into functional pituitary adenoma and non-functional pituitary adenoma. Those that can secrete hormones to cause endocrine dysfunction are functional, while non-functional pituitary tumors are usually characterized by decreasing visual acuity, headache and other symptoms that are manifested by growing tumors. 8. Decreasing sense of smell. Decrease in sense of smell is usually hard to find, if one side or both sides of the sense of smell is found to be decreased by chance, in addition to going to see the Pentacenter, it should be highly suspected that intracranial lesions involving the olfactory nerve, such as anterior cranial base / olfactory sulcus meningiomas, olfactory cell tumors, or chordoma involving the anterior cranial base, etc. If there is no bad smell around and one smells it, it is a functional disorder. If there is no odor in the surroundings and there is strange smell (phantom smell), it may be a special manifestation of epilepsy, and one should be highly alert to tumors in the medial temporal lobe. 9.Memory loss and mental mood change. With the increase of age, some of them will have memory loss or slow reaction, which is also more common. However, if there is obvious progressive memory loss or decreased reaction time in a relatively short period of time (e.g., half a year), or if the above symptoms occur at a young age, intracranial lesions should be emphasized. Larger frontotemporal or corpus callosum lesions (such as glioma) or chronic increase in intracranial pressure (such as a variety of space-occupying lesions, slowly growing or hydrocephalus), do not necessarily have early and clear localization of the signs or symptoms, but gradually manifested as memory or response to the slowness of the computational decline in the symptoms of such patients are often the first to be found by the close contact with the loved ones and sent to the hospital for medical treatment, and some of them are treated as Alzheimer’s disease and misdiagnosed! The above 9 symptoms are the most common symptoms after the occurrence of intracranial tumors. Of course, the occurrence of symptoms is not a criterion for the diagnosis of the disease, but a clue for the early detection of the tumor. If the above symptoms occur, the author suggests to go to the hospital as soon as possible for relevant examination to clarify the existence of intracranial tumors.