While their size and shape vary with location in the nervous system, most neurones contain the same parts: a cell body; a number of highly-branched outgrowths of the cell body called dendrites; a single, long nerve fibre (or axon) extending from the cell body; and branches at the end of the nerve fibre (axon terminals).
My doctor said that usually happens when blood pressure is high and you get that strange head sensation. But as I was reading some documents on net, I found out that it could also be some sort of a panic attack. You could try next time it happens to relax, try thinking on some peaceful place, and just calm down.
Benign positional vertigo (BPV) is the most common cause of vertigo. It causes a sudden sensation of spinning. It can also make you feel like your head is spinning from the inside. If you have BPV, you can have brief periods of mild or intense dizziness. An episode is generally triggered by changing the position of your head. In particular, the following actions can trigger an episode of BPV: tilting your head up or down.