I have severe ME. I can remember the moment I got it. Virus related to polio caused pericarditis in 1996. I was struck down and ended up in intensive care. I lost my ability to walk, write, think, spell, digest food, control my temperature or my heart rate. I was in constant unrelenting pain. I was in bed for a year. That was 20 years ago.
Still have all the symptoms I had then but some have improved but it is a struggle. No one should disbelieve these illnesses they can limit life. My two heroes and helpers on line have passed away in their youth from the disease, both were ill and both fighting to get the illnesses known and researched. People say to me are you just tired? This is the worst thing anyone can ask as it is so much more than that. Fibro is similar it is horrendous- you are not alone, and I believe that acceptance by others is our biggest challenge, as the media has done so much historically to make these diseases appear trivial. My own father thinks I am making it all up for sympathy, he always has because he read the wrong things in the newspaper. So much is expected of me, and I am too sick to action it for others. The payback is hell- it can affect all the things I mentioned and it can cause massive heart problems.
I am lucky though as I can get up now. Many can't and many are so young. The disease is horrific. My heart goes out to you. I wake up in a cold sweat each morning, it is orthostatic intolerance. I stand up and my BP is 90/80 on a good day, some days it can't even measure. So no blood flow to brain. Put me in heat and it is worse, eat a meal and again it deteriorates. This is one of the reasons many are bed bound including those with fibro. Peri makes things worse - many symptoms overlap - it is all very hard but we are all here for you and you are not alone.