Welcome to the forum!!! IIH can be secondary to different medications, sleep apnea, and systemic diseases like leukemia, so I'm sorry to say it's not a complete surprise you developed these symptoms. NORD has a lot of good information at rarediseases.org or you can check the Intracranial Hypertension Research Foundation at irhfoundation.org for more information about it.
I also encourage you to explore the forum posts and let us know if you have any questions or concerns.
Take care,
Julie