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

Causes and Treatments of Primary or Secondary Fibromyalgia

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 Chronic Fatigue Syndrome

Medically reviewed by Scott Zashin, MD

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

Why Systemic Exertion Intolerance May Better Describe Chronic Fatigue

Medically reviewed by Tamar Brionez, MD

Woman and her doctor talking about results

Doctor Won't Diagnose Fibromyalgia? See Why!

Medically reviewed by David Ozeri, MD

man resting on bed

Is It Called Myalgic Encephalomyelitis or Chronic Fatigue Syndrome?

Medically reviewed by David Ozeri, MD

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

Why Is Chronic Fatigue Syndrome So Difficult to Diagnose?

Medically reviewed by Anita C. Chandrasekaran, MD, MPH

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

How to Tell If You Have Chronic Fatigue Syndrome

Medically reviewed by Scott Zashin, MD