Early stage of brain tumor can cause symptoms of cranial hypertension, including headache, nausea, vomiting, etc. It can also cause dysfunction of corresponding parts of the body, such as hemiplegia, loss of vision or hearing. 1. The growth of brain tumor in the brain will cause the intracranial pressure to increase and then cause a series of symptoms, such as headache, nausea, vomiting and aggravation of impaired consciousness. 2. Depending on where the tumor grows, it may lead to different symptoms, such as hemiparesis on one side, vision or hearing loss, unsteady walking and choking on drinking water, etc. These symptoms are caused by the dysfunction of the region due to the growth of the brain tumor. If you suspect a brain tumor with the above symptoms, you should go to the hospital in time to avoid delaying your condition.