What should you know about primary glioblastoma multiforme?

Glioblastoma develops from supportive glial cells in the brain. It can grow into nearby brain tissue, so its position matters: symptoms and treatment effects depend on the area involved. Possible symptoms include new or worsening headaches, seizures, weakness, speech difficulty, changes in vision, memory problems or changes in personality.

MRI and other tests help define the tumour. A tissue sample obtained during surgery or biopsy allows specialists to examine tumour cells and may provide features that inform treatment. The care team balances tumour control with protection of functions such as movement, speech and thinking.

Treatment may involve brain tumour surgery, followed by radiotherapy and medicines such as chemotherapy, depending on the tumour and your health. Steroids may be used to reduce swelling, and anti-seizure medicine may be considered when seizures occur. Rehabilitation can support speech, movement, thinking and daily activities.

Keep a written list of symptoms, medicines and seizure events. Arrange practical help with transport, meals and appointments, and ask about [Brain Tumour Surgery](/treatments/surgical-oncology/brain-tumour-surgery/), [Radiotherapy](/treatments/radiation-oncology/radiotherapy/) and [Chemotherapy](/treatments/systemic-therapy/chemotherapy/).

Call emergency services for a first seizure, a seizure that does not stop, sudden weakness on one side, new trouble speaking, loss of consciousness, severe confusion or a sudden severe headache. Contact the treatment team promptly for repeated vomiting, worsening drowsiness, fever or a new neurological change.

Ask where the tumour is located, what function could be affected by surgery, whether tissue testing is complete, what each treatment is intended to do, how swelling and seizures will be managed, and whether a clinical trial is relevant.