Glioblastoma is an aggressive type of cancer that can occur in the brain or spinal cord. Glioblastoma forms from cells called astrocytes that support nerve cells. Glioblastoma can occur at any age, but tends to occur more often in older adults. It can cause worsening headaches, nausea, vomiting and seizures. A malignant tumour affecting the brain or spine.This type of tumour grows and spreads rapidly, often creating pressure.Symptoms include headache, nausea, drowsiness, blurred vision, personality changes and seizures.Treatments include radiation, chemotherapy and surgery.