On 2014 Oct 18, David W Brandes, MS, MD, FAAN commented:

I am very happy to see more published information about this topic. I have been speaking professionally abut this topic for 10 years and it is becoming increasingly recognized as to it's importance in the management of MS patients. This article confirms the often unrecognized frequency of this issue. When MS patients say they "are tired all the time," we need to think about the details. Physical fatigue, cognitive fatigue, psychological fatigue (depression) and sleepiness may all be part of this complaint.

On 2014 Oct 18, David W Brandes, MS, MD, FAAN commented:

I am very happy to see more published information about this topic. I have been speaking professionally abut this topic for 10 years and it is becoming increasingly recognized as to it's importance in the management of MS patients. This article confirms the often unrecognized frequency of this issue. When MS patients say they "are tired all the time," we need to think about the details. Physical fatigue, cognitive fatigue, psychological fatigue (depression) and sleepiness may all be part of this complaint.