Hello yes fibro does severall things to your nervous systems. first is over sensitivity to some simple reactions. As the continious pain from fibro can create what i call phantom pains. these for me are sharp sudden pains in a part of the body thats normally fine. They dont last more than a few seconds but they are percieved as very painfull. in a normal heathly body these would just be a twitch. but we see it as pain. so why sound? well sudden un expected sounds usually cause us to jump. and when in a drowsy sleep ( Like falling asleep in front of the telly ) will cause a violent flight or fight type of reaction and the body reacts. But for fibro patients it starts a process that it cant finnish so leaves one in a wierd state where the body does not know what to do. The brain is confused and this " whats goin on " reaction will cause you to feel scared shocked and unwell. If it happened when driving i would think you were in a partial trance anyway , probably from your meds or when we get this "auto pilot" sensation where we are doing things automatically in a sub contious state and not fully awake. thats why the sudden noise from the motorbike brought you back to a fully consious state and your body didnt know what to do..This unlocks the cold sweat/fear/depressive state and you feel horrible..
The truth is you should not be driving if your meds are doing this... i avoid taking tramadol during the day to prevent me getting in this state.as i am allways having to drive..so i have to manage the pain with a tramadol-paracetamol mix 37.5mg and 325mg rather than taking 150mg of tramadol
if i have had to take higher doses or the pains are too much then i wont drive.
this is just one possibility of what you were experienceing . im no doctor but do understand what is happening inside me.
Fibro will allways create depression and despite me taking Laroxile the depression and sensitivity is allways just lurking under the surface. That too is normal as we are not happy from we have...we have lost certain abilities and strenght, have great pain and weakness and the soul gets weakened. Suffering from fibro you have to accept this...you will be over sensitive, as the whole nerviouse system is affected, you just have to allow for that. and remember it,s just your fibro talking.
colin