What's the difference between fibromyalgia, myofascial pain and herniated disk pains?

Fibromyalgia. Pain in fibromyalgia is more diffuse and shifts in location at different times.
Pain Location. Fibromyalgia is diffuse body aches and pains commonly associated with unexplained fatigue and depression. Myofacial is pain only limited to the face. Herniated neck disc pains is neck pains, diffuse headaches and radicular arm pains.