what is this?

[Freddy1234]

Hi, I get these episodes every once in a while--I feel very warm and start to sweat, get dizzy and get very shaky. Then I get very cold and  feel like I'm either going to throw up or lose it the other way (but never have).  I have to sit/lay down because my legs & body get very weak.   I take levothryoxine for my thyroid.  After I sit/lay down for just 10-15mnI feel better.  I'm curious what you think this sounds like.

[Freddy1234]

thanks for the information

[Dr. Kokil Mathur]

Hi
Welcome to the MedHelp forum!
The symptoms could be due to a hyperthyroid state reached due to excess intake of thyroid replacement hormones. Hence this is the first thing you should check for. Orthostatic or positional vertigo is another possibility. Hypoglycemia and severe anemia and or GERD or gastric reflux could be other causes. It could also be a vasovagal syncope or a vasovagal attack. The complex group of symptoms is mediated by the vagus nerve. This nerve is irritated by prolonged standing, standing up suddenly, stress, pain, hunger, dehydration, intense emotion etc. A tilt table test, holter monitor, echocardiogram etc are done for confirmed diagnosis.

I think you should discuss these possibilities with your doctor. It is difficult to comment beyond this without examining. A comprehensive investigation is required keeping all the points in mind. Hope this helps. Take care!