Brain fog is a classic part of CFS and fibromyalgia, presenting as:
Difficulty with word finding (e.g., remembering someone’s name),
Word substitution (e.g., calling your husband by the wrong name!), and
Loss of short-term memory.
It can be very severe and even frightening, leaving people with CFS concerned that they are developing Alzheimer’s. But they’re not. CFS brain fog is when you keep forgetting where you left the keys – Alzheimer’s is when you forget how to use the keys!
The good news? Brain fog responds very well to treatment.