Here are some questions about your experiences with BRAIN FOG and POST-EXERTIONAL MALAISE: (1) Do you have brain fog (mild cognitive dysfunction) all the time, or does it vary a lot in degree from hour to hour, and day to day? (2)Is your brain fog worsened from post-exertional malaise (whether the PEM was caused by a physical exercise, or from intense mental activity), or is there no relation between your post-exertional malaise and brain fog? (3) Which limits you most, would you say, brain fog or post-exertional malaise? Which of the two would you say imposes the greater restrictions on your life? If you could cure just one of the two, which would it be? Would curing both allow you to make a substantial jump back into regular life, do you think; would curing both be the end of you CFS/ME? (4) Do you think the descriptions below of brain fog and post-exertional malaise are accurate and capture the essence of these two CFS/ME phenomena? (5) Finally, do you personally feel these two phenomena are separate things, that may occur at different times, and for different reasons, or do you feel they inextricably linked, so that one is really just a continuation of the other? No need to answer all these 5 questions, just the ones you think you have relevant insights into - thanks. Brain fog is typified by: =============== Poor short-term memory (for example, you may constantly forget what you were just about to do, or what you just did). Poor working memory (so you cannot grasp or juggle more that a few facts or figures in your mind at one time, often making problem solving much more difficult, and making multitasking ie, paying attention to more than one thing at the same time very difficult). Anomia, which is problems recalling words or names. Slips of the tongue, saying a different word to the one you intended often by unintentionally substituting a categorically-related item, or an item with similar qualities or characteristics, instead of the right item. For example, saying "axe" instead of "hammer" both are in the category of tools, and both have the qualities of being weighty metal implements that you strike with. It is if the brain aimed to use the right word, but missed ever so slightly. Miscategorization of environmental stimuli (like answering the phone when the doorbell rings). Lack of focus, so that it becomes difficult to remain focused on the task at hand (this is possibly related to the poor short-term memory and working memory). Confusion, being very easily perplexed by situations. Lack of awareness of the things going on around you. Post-exertional malaise in has been described by this blogger as: =========================================== Not being able to be out of my bed for more than an hour a day. Not being able to talk too much. It takes a lot of energy for me to talk and I can only say about 200 words in an entire day. This is equivalent to you reading about 2 paragraphs out loud and then not being able to speak for the rest of the day. Not being able to walk very far. My limit is 100metres (or about 1 minute.) Some days my limit is less as I may go to my letterbox and back and then crash. I cannot tolerate much stimulus. My ability to cope with stress is impaired, so I purposely try as hard as possible to avoid conflict around the house. I am not able to think too much. For instance if I played a game of chess I would definitely crash. Im unable to leave my house for long. If I have been driven away from my house and spend 30 minutes in the car before returning to my house, I will crash. Generally: Brain fog relates to a loss of mental capabilities (such as loss of memory capabilities, stimuli discernment, focus and awareness). Post-exertional malaise relates to a loss of mental and physical stamina or tolerance (such as a loss of energy to move, talk, or think; such as a loss of tolerance to stress; and such as a loss of tolerance to noise and high-impact stimuli).