https://www.youtube.com/watch?v=VJfQo1qDG88 Brain fog is one of the most common symptoms of many chronic illnesses, including lupus, multiple sclerosis and fibromyalgia. In this Mind Over Meniere's video, Glenn describes how brain fog affects him on a daily basis. MORE: One fibromyalgia patient shares how the condition disrupts her daily routine Brain fog is more than just the occasional forgetfulness that most people suffer from. It is a cognitive impairment that can affect conversation, short-term memory, and the ability to concentrate and focus. Glenn explains that very few people know about brain fog since it's an invisible symptom. He hopes that his videos will help the public realize how common it is for people with chronic illnesses to suffer from brain fog and how those who suffer from it will require patience and understanding. MORE: Our resident columnist, Robin Dix, writes about conditions fibromyalgia patients often suffer from Fibromyalgia News Today is strictly a news and information website about the disease. It does not provide medical advice, diagnosis or treatment. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or another qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.