I'm 24, since Dec. 14th I've been having lightheadedness and nausea and I've went in to the hospital twice for palpitations and anxiety. I finally saw my primary doctor who told me that its was because my high blood pressure medication 40mg LISINORIL and 25mg HYDROCHLOROTHIAZIDE was giving me low blood pressure.(I went off my medication late Oct. cause I started working out alot with a trainer and didn't get back on till Dec. 21st.) So I have to cut my meds in half. The dizzness was causing me to belive that I had vision problems so I told her that I thought I was having problems with my vision. Now she wants me to have an MRI to check for brain tumor. Which she really doesn't think I have and she really wanted me to do something for my anxiety. So she prescribed me with CITALOPRAM. I just don't know what to think no more! I did some research and all the symptoms of anxiety, low blood pressure and brain tumors are too similar. And I have never taken medication for anxiety before and I'm scarred of the side effects of this particular medication. I'm a wreck.