What are the symptoms of early brain cancer

What are the symptoms of early brain cancer? Brain cancer is a malignant tumor in the brain, and the mortality rate of this disease is very high. So far, the cause of brain cancer has not been thoroughly studied. So do you know what are the early symptoms of brain cancer? Here are some early symptoms of brain cancer:

Early symptoms of brain cancer: morning headache. Headache is a common symptom of brain cancer, often occurring at four or five in the morning. The patient is often awakened by the pain while sleeping. The headache gradually eases or disappears after getting up and doing some light activities, so it is called "morning headache". Tumors in the posterior cranial fossa can cause neck pain that radiates to the eye sockets, and the severity of the headache gradually increases as the disease progresses.
Early symptom of brain cancer: mental abnormality. A brain tumor located in the frontal lobe of the brain can destroy the mental activities of the frontal lobe, causing abnormal mental manifestations such as excitement, agitation, depression, and depression.
The third early symptom of brain cancer: Olfactory hallucinations. Olfactory hallucinations occur because the temporal lobe located in the lower part of the brain is stimulated by the tumor. Brain cancer patients often smell odors that do not actually exist, such as burning rubber and burnt rice.
Early symptom of brain cancer: visual impairment. Increased intracranial pressure can cause edema due to poor return of venous blood from the eyeball to the brain, leading to decreased vision. In severe cases, the retina may have punctate, linear, or flaky lesions or even hemorrhage, causing blurred vision.
Early symptoms of brain cancer 5: unilateral bulging of the eye. That is, one eyeball bulges forward, and in severe cases, the eyelid does not close completely. The most common cause is a brain tumor.
The sixth early symptom of brain cancer: decreased sensation. The parietal lobe, located in the middle of the cerebral hemisphere, is responsible for sensation. Brain cancer in this area can cause unilateral limb pain and decreased or absent sensation such as body shape discrimination.