A woman holding her shoulder and lower back

Diagnosing Chronic Fatigue Syndrome and Fibromyalgia

A CFS and fibromyalgia diagnosis works by process of elimination. No single test confirms the conditions, so your doctor will rule out similar ones first.

Senior African American man rubbing his shoulder

Is Your Fibromyalgia Primary or Secondary?

Medically reviewed by Shaheen Lakhan, MD, PhD

Doctor showing digital tablet to patient

Disease vs. Syndrome in Fibromyalgia and ME/CFS

Medically reviewed by David Ozeri, MD

Doctor feeling woman's lymph nodes

Where to Start When Newly Diagnosed With Fibromyalgia

Medically reviewed by David Ozeri, MD

Doctor and patient in radiology lab

Getting an MRI With Fibromyalgia or CFS

Medically reviewed by Grant Hughes, MD

Out-of-breath woman with her hands on her knees

Overview of SEID: Systemic Exertion Intolerance Disease

Medically reviewed by Tamar Brionez, MD

Woman and her doctor talking about results

Why Won't My Doctor Diagnose Fibromyalgia?

Medically reviewed by David Ozeri, MD

man resting on bed

Myalgic Encephalomyelitis or Chronic Fatigue Syndrome

Medically reviewed by David Ozeri, MD

A doctor discusses a new diagnosis with an older male patient.

How Chronic Fatigue Syndrome Is Diagnosed

Medically reviewed by Grant Hughes, MD

Studies suggest a blood pressure cuff may help identify people with fibromyalgia.

How Fibromyalgia Is Diagnosed

Medically reviewed by Claudia Chaves, MD

Man sleeping at subway station

Do You Have Chronic Fatigue Syndrome?

Medically reviewed by Scott Zashin, MD