Thank you for your reply. So far, I have such extreme fatigue that just taking a shower wipes me out. I have PEM (post-exertional malaise), which is a worsening of symptoms after physical or mental exertion. I've been trying to figure out if the fatigue is more from CLL or CFS, although figuring out what to do about it is almost impossible. My doctor has worked with me to try adderall and ritalin and other possible remedies, but nothing works. I have to find answers because I can't accept sitting in my chair just waiting! I have been diagnosed with Long Covid, also.