'What is brain fog -- and when should I seek medical attention?': Ask a doctor

Fox News Flash top headlines are here. Check out what's clicking on Foxnews.com. Most people have had brief lapses of memory -- forgetting a train of thought, a driving route or maybe a word choice. In most cases, these episodes last only a few seconds and are nothing to worry about -- but if they persist, it may warrant getting a doctor's input. For a clearer understanding of what defines this condition -- often referred to as "brain fog" -- Fox News Digital asked two medical doctors about recognizing the symptoms and when to seek medical attention.