Tooth nerve decay and dizziness/vertigo

I got a deep filling done in November 2010 and since then has severe pain when pressure was applied to this particular tooth.  I got my bite filled down numerous times but that didn't help.  I went to an endodontist 4 months later and he said that the nerve was probably dying and decaying onto the bone underneath my tooth, this is why there is a sensitivity to pressure.  Ever since I got the filling, I've experienced episodes of faint-headedness, dizziness, and vertigo that is very scary.  It's usually when I am sitting down (luckily).  It has gotten worse over time.

I thought it was due to anxiety attacks/panic attacks because it USUALLY happened when I was sitting in school or in group therapy settings (I'm a counseling student).  I have talked to a therapist and been prescribed a benzo to take as needed ie: group settings.  Last night I made the connection between my dentistry work and my dizziness type symptoms.  I'm wondering if psychologically I was somehow allowing this dizziness to effect me during certain times.  Or maybe it is how I sit in these settings that is promoting dizziness/vertigo.  At home, I usually sit with my legs propped up or cross legged.

I'm scheduled for a root canal tomorrow and am very very very hopefully this is the cause, and it's not some psychological reason which will take more effort to understand and manage.

[Jerome Tsang, DDS]

How are you feeling after the root canal was done?  Are the symptoms still there?

[Amicita]

Hi Jerome Tsang, well I feel better but feel like it's too soon to tell, yet.  I will keep you posted.  Maybe in a week or two I will be able to gage whether the root canal helps or not.  Hopefully so!  Thanks!

[Jerome Tsang, DDS]

Ya, it may take up to a month to really get the full healing going.  But as long as the improvements are gradual, that's great.