Glioblastoma is a rare and aggressive type of brain tumor classified as a type four astrocytoma. It grows rapidly, often affecting the brain or spinal cord in adults, and is thought to be caused by genetic changes leading to uncontrolled cell replication. Symptoms include headaches, nausea, vomiting, seizures, and neurological abnormalities depending on the tumor's location. Diagnosis typically involves MRI imaging and confirmation through a biopsy. Treatment aims to prolong survival and improve quality of life, involving surgery to remove as much of the tumor as possible, radiation to destroy remaining cancer cells, and chemotherapy to target cancer cells further. Additional therapies include alternating electric fields therapy, which slows tumor growth, and medications to manage symptoms like brain swelling and seizures. Despite these treatments, the prognosis remains poor with low long-term survival rates.