The following was posted by another person here on this site a couple years back. So far this is probably the closest explanation of what was going on with me Thursday night. </font><blockquote><div id="quote"><font class="small">Quote:</font>
Hypervigilance
is the result of elevated levels of catecholamines (adrenalin and noradrenalin) and cortisol, the fight/flight hormones....When trauma has not been treated, relatively minor events can continue to trigger this arousal in what can seem to be an exaggerated reaction. Dizziness, shakiness and trembling may be felt. The individual is bio-chemically re-traumatised, which results in further emotional arousal, insomnia, irritability and anxiety. Repeated episodes of hypervigilance may lower cortisol levels in the long term.

Freezing or numbing
affects the individual by creating tension deep within the body. It affects respiration and fluid movement. In this state the level of neurotransmitters tends to be low. In the frozen state, the individual will have a tight chest with shallow respiration, a rigidity or stiffness to their posture and appear to be emotionally numb. Freezing affects homeostasis by restricting the flow of cerebrospinal fluid, lymph and other extracellular fluids, thus restricting an already depleted supply of neuropeptides throughout the bodymind network.

Dissociation
can cause a 'lights are on but nobody is home' sort of effect. Excess levels of adrenalin and endorphins, neurotransmitters that affect memory, can result in amnesia of sorts. The person will be forgetful, depressed, disconnected and lacking motivation. These people may not feel very good, but can't identify what is wrong and they may not be fully aware of pain. Their posture is often slumped and they are vague. This out-of-body state is also an out-of-consciousness state.... It dulls the pain, but also nullifies personal power and volition.

</div></font></blockquote><font class="post"> The frozen hands which I couldn't move my fingers separately, the shaking, the leaden curtain feeling of being 'shut down' bit by bit.........desperately trying to remember what was going through my head before I'm checked out for good.

I'm not able to explain much as more and more does not make sense to me.