HiI was experiencing these same symptoms. I started getting symptoms of fuzzy head, poor concentration, dizziness about 6 years ago. In the past 3 years it seems to have become worse - so bad that I was becoming quite depressed, was reluctant to drive due to the feelings of fuzziness/ cognitive impairment. I didn't feel like socialising with friends because I was having difficulty with speech and articulating my words. At work I struggled everyday to keep up with managing my work, using all my energy to try to keep focused on my work. Conducting meetings was hell!!I promised myself if I were to ever find some relief from my symptoms I would come back to these posts to hopefully assist others with the same symptoms.Two weeks ago a friend gave me a book about food intolerances. It's called "Food Intolerance" by John Hunter MD, Virginia Alun Jones MD, Elizabeth Workman RD, first published in 1986. I decided that it was worth a try to do their 'Exclusion Diet'. It was quite difficult for the first week (modifying my diet) and also about the fourth day I got what felt like a really severe head cold. It got a lot of mucus from my nose, extremely blocked nose and headaches. The head cold lasted about 5 days! I think this was my body trying to detox.Since I started a diet excluding all wheat and oats in particular, every day I am feeling better and better. My diet has mainly consisted of rice products (rice bubbles for breakfast), salads, steamed vegies, boiled potatoes, and grilled meats such as chicken and beef. I have also been eating canned tuna. I have found that I get fuzziness symptoms following eating bread, muffins, oats. At the moment I am having milk in small quantities, but when I started the diet I only took rice milk. So far, dairy doesn't appear to be causing me to feel fuzzy.I was reading about coeliac's disease this morning and some of the symptoms include dizziness, fatigue etc. I have not tested for this disease, but I plan to in the near future. I think it would help to put a name to my symptoms and take more control of my health and life.I should note that I have had suspicions about wheat allergy for some time, but when I got an allergy test I wasn't 'allergic', however I have since learned that 'allergies' and 'intolerances' are different. Intolerances won't be picked up in an allergy test. The best way to test is to exclude it from your diet for some time and see if your symptoms disappear.I've only been doing this diet for two weeks now, but I am feeling so much better! I actually feel happy again. I am less moody and impatient. I am able to concentrate on things, more sociable, doing more things that I love such as walking and driving. I am having less cravings for oily, fatty, baked foods.Please don't despair. Like you, I was absolutely desperate to get my life back. It is worth trying to alter your diet to see if you too are intolerant to some food/s which may be causing you these symptoms. I know that I am intolerant to wheat and oats. I will get tested for coeliacs disease. I wish you all the best, and hope that you may be free from these debilitating symptoms too.