Question: what is the difference between fibromyalgia and myalgic encephalomyelitis?
Answer: Myalgic encephalomyelitis is a disease, not a diagnosis of exclusion — a wastebasket diagnosis — like chronic fatigue syndrome and fibromyalgia are. And yet they have a long history of being lumped in together. And myalgic encephalomyelitis isn't fibromyalgia either, despite some similarities.