I had what I thought was a sinus infection
, with headache, for 9 months. Being a mom, I took lots of OTC meds and ignored it as long as possible. I was finally directed to the ER by my opthomologist, who saw my enlarged optic nerve heads. After a clear MRI (no tumor or sinusitis), I was diagnosed with Pseudotumor Cerebri. It is a disorder caused by increased intercranial pressure, that mimics many symptoms of tumor. It is treatable. But it isn't well known to many docs.