I'm new to the forum as well and still navigating through all of the information trying to find something helpful for my son...looks like I came to the right place...just have to find a starting point. He suffered a concussion in July and has many of the symptoms discussed in the threads/posts, etc. One of which is he also lost his sense of smell and the sense of taste along with it. Some say both could take months to return, some say never. I'm still hoping for the months. So I don't have an answer either, but certainly an understanding of the frustration. I had no idea concussions caused so many long term problems!