That's an interesting question
I was 18 when it hit, I'm 30 now. At the beginning of my pregnancy. The fatigue & fog hit like a ton of bricks! It's been multiply symptoms since & just gets worst.
Before it all I was very busy. Constantly on the go. I'd walk a mile to a friends house then back, sometimes 6 or 7 times a day. I would work 13 hours a day for over a week & be out with friends most of the night getting 3-5 hours of sleep. I had another part time job which was very physical. I didn't really stop. I had a tv & would let it run, but never sat down to watch it. The only time I remember sitting down was to go out to coffee with friends & visit.
I was active, skinny & felt great! I don't remember ever getting mad about anything. I was very patient. I had a hard childhood but for 3 yrs before this hit, I was at my happiest. I may have been run down & didn't know it. Then the pregnancy may have been the final straw. But then, the Dr who is actually taking me serious, asked if I ever had Mono. I did when I was about 15. I guess you always carry the virus once you've had it. Studies show it may be the cause.
I see a Rhumetologist next week. My Dr diagnosed me with Chronic Fatigue. I've had many tests & all turn out fine... I do have Thyroid Probs & also been allergic to Wheat Gluten & Wheat Starch. I've eaten Bleach wheat for years... Well, anymore, any gluten causes me probs. So, I've been on a gluten free diet for 4 months.
The brain fog for me is the worst. I feel like I'm watching my life through a window or tv. I feel that maybe if I felt "awake" I'd be able to live a more fulfilling life.
Also, I found that I have Anxiety with Depression. The Anxiety makes me jump from one thing to another. I feel like if I stop, I'll just drop & get nothing done. Anymore my body is so sore & tired, plus I have a bad back which causes allot of probs... So, I rest more these days, have to. But even while resting, I still have to be doing something. Even if it's goi9ng through bills, preparing papers for tax season or just doing a puzzle. My mind has to be doing something or I get restless...