I've got a diagnosis of cfs for many years.

In the end it turned to be lyme disease and pots (disautonomia)

I've got a long cycle of antibiotics for lyme disease and they helped me a lot.

But pots remained, I am still taking drugs for it. I'll have it all my life. But I've found I can manage it through exercise.

Before antibiotics I was so tired that any amount of exercise would bed ridden me for weeks. I was very ill.