Fatigue has been a real problem for me. At times it seems to come over me all at once and can just be overwhelming. I've heard it both ways as far as whether MND does this, but it seems many others have it too. One common cause is autoimmune disease, which at first my doctors thought I had (and maybe do have too). If you haven't been screened for these type conditions, it would be a good avenue to go down. Rheumatology is another one of those specialty areas where often times there are no clear cut answers, but I'm sure it would be a relief to you to find a cause for what you're experiencing. take care, :smile: