I would go to a doctor that is not afraid to run a multitude of tests. The "type" of doctor is not as important. The book by Benjamin H. Natelson, M.D. titled, "Your Symptoms are Real" lists a bunch of tests.

A rheumatologist, GP, endocrinologist, Integrative medical specialist, osteopathic doctor, can all be equally effective... or ineffective.... at diagnosis and treatment.

In my opinion.

Jaspar