I've been sick since 1990. My symptoms have definitely changed over time.
I think the biggest change is that in the beginning I wanted to sleep a lot more. It's not like I fell asleep in the middle of talking to someone (not narcolepsy) or anything like that. It's just that I slept more hours per night. And I also slept in the afternoon a lot of the time which did not reduce my wanting to sleep at night. I did not have insomnia, I had hypersomnia.
But it's hard to be completely sure which other symptoms have diminished due to time vs. medical treatment vs. learning how to adjust what I do and pace myself (and then finally going on long term disability).
For example, I know that treatment of the dysautonomia (NMH & POTS) has reduced many of my symptoms.
But some of my symptoms, like the muscle twitching (fasciculations) might be reduced because I simply don't push myself the way I did during those early years. For example, on both of my tilt table tests (1995 and 2003) the muscle twitching right before I fainted was pretty intense.
Muscle twitching also comes back when I overuse a particular set of muscles. For example, when I forget and try to hold something for a long time, e.g., I use the blow dryer to dry my hair and forget to put it down about every minute. Any muscle use that is sustained, not just a quick motion, seems to be bad for me.
It's weird because it's not weakness. I can carry a grocery bag from the car into the house as long as it's a good day. But I've learned not to hold my phone in my hand because that will cause twitching, and maybe some aching, later on. So I have a headset.
I hope this is helpful and not too rambling.
