[patrec]

Interesting -- to my naive mind headaches and dizziness sound more like a brain problem (concussion) than a neck problem (whiplash). So, if you don't mind sharing, I'm curious what the actual underlying problem was and how the physiotherapy solved it.

I had a quick google but the only paper I found that proposed some mechanism ("vertebrobasilar artery insufficiency (VBI) leads to brainstem and cerebellar ischemia and infarction following cervical manipulation", i.e. bashing the neck might mess up blood flow to the brain somehow, causing bits of it to die off) looks complete bullshit.