How can I find reliable information on a chronic disorder on the Internet?

If you are interested in medical research, go to pubmed.gov and do a search for articles on fibromyalgia, chronic fatigue syndrome, or chronic myofascial pain from trigger points. Contact the author, usually there is an email for at least the lead author. Note who is supporting the recent research and look for people with a common interest.

Be suspicious of any web pages that do not list resources. There is no gatekeeper for the internet.