<s>[INST] I have ependymoma 4th ventricle tumor with hydrocephalus . 90% was removed a month ago with remaining 10% on my brain stem and waiting on radiation therapy . I have a headache that feels like a headband is way too tight. My ears feel like I need to pop them, and bright lights hurt. I don t know what is causing this now, or what to do about it, as my pain meds are not managing this headache. [/INST] Hi,Thank you for posting your query.One of the possibilities could be worsening of hydrocephalus. This can be confirmed with a CT scan of the brain. In case, there is hydrocephalus, you may require shunt surgery.If you had migraine earlier, the current headache could be an exacerbation of the same.I hope my answer helps. Please get back if you require any additional information.Wishing you good health,Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology)Senior Consultant NeurologistApollo Hospitals, Hyderabad, IndiaClick on this link to ask me a DIRECT QUERY:  BLOG: </s>