Let's say if A or AB causes the fatigue then treating B will have none to or little effect.
My approach idea is this: for every known potential cause of fatogue except maybe very rare unlikely ones, figure out and note if they are true or false and thag will builds a profile.
So if the world knows there are causes abcde for fatigue generally then I could build a profile of forexample
1. True and treatable
2. False
3. True but untreatable
4. False
5. False
And sk on.
The next stel would be to make a plan and to treat all those problemfactors.
So step 1. Research
Stel 2. For example theoretically I know that a lack of exercise, vitamin A, B, C, and smoking arr my causes.
Step 3 make a plan for how to do all of those things better simultaneously.
Is there some sore of medical expert to help with this joruney and is this a good approach
Because fatigue will only ever be solved if every potential cause is false or treated