Glioblastoma is a type of brain cancer that arises from glial cells, which support and protect nerve cells. It is known for its aggressive nature and rapid growth, often making it difficult to treat. Symptoms can include headaches, seizures, and changes in personality or cognitive function, depending on the tumor's location in the brain. This cancer is classified as a grade IV tumor, the most severe category according to the World Health Organization. Treatment typically involves a combination of surgery, radiation therapy, and chemotherapy, but the prognosis remains challenging, with many patients facing a limited survival time.