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What is the cause of your hydrocephalus? How old are you? How tall are you? How much do you weigh? Exactly where are the headaches? What are they like? On a scale of 0-10, what is it with being 0 no pain being 10 the strongest pain? How long do they last? How many times a day? Does anything make it better or worse? Was it consistent? Any other symptoms such as tearing, blurry visions? Are you aware of anything which might have triggered it? Any other medical problem? Any surgeries? Any medications? Any family medical history?
When did you have the meningitis?
Did you have any imaging studies for the meningitis?
It is a typical type of headaches because of hydrocephalus. Headaches due to increased increased intracranial pressure tend to occur in the early morning and may be associated with nausea and vomiting. They tend to occur in the morning because venous pressure is higher in the recumbent position. You should see your doctor for the treatment.
You should make MRI or CT compared to the previous one when you didn't have the headaches.