It is one of the most common symptoms of multiple sclerosis and the least likely to come up at an appointment. A systematic review published last month found that sexual dysfunction remains under-recognized in MS care and underrepresented in clinical guidelines. Here is what that means, and what you can do about it.

Sleep is one of the most common non-motor symptoms in Parkinson's disease and one of the least likely to get a real answer at an appointment. New research compared exercise types head to head and found a clear winner. Here is what it means for you.

Nobody warns you about the fatigue. It's one of the most disruptive and most invisible symptoms of Parkinson's and MS, and it's not solved by getting more sleep.