- Subjects who have a recognised diagnosis of fibromyalgia, with defined minimum pain
criteria. Control subjects must not have a fibromyalgia diagnosis or symptoms and must
match fibromyalgia subjects for age, length of education and gender
- Other confounding pain, cognitive disease or impairment, disease that could put the
subject at risk or subjects who are on prohibited medications that cannot be washed
- Any subjects with a diagnosis of certain psychiatric disorders in particular major
depression or suicidal risk. Matched control subjects have similar exclusions.