Understanding Historical 1990 Criteria: Why Tender Points Still Aid Physical Exams

Fibromyalgia remains a complex condition to diagnose. In 1990, the American College of Rheumatology (ACR) introduced criteria that relied on the presence of tender points—specific spots on the body that hurt when firm pressure is applied. Although newer guidelines emphasize symptoms and questionnaires, understanding those original tender points can still help guide physical exams today.

The 1990 ACR Criteria at a Glance

In 1990, the ACR defined fibromyalgia by two main features:

• Widespread pain for at least three months, on both sides of the body and above and below the waist.
• Tenderness in at least 11 of 18 specific points when pressed with about 4 kg of force (enough to blanch your examiner’s thumbnail).

These tender points were chosen because people with fibromyalgia are more sensitive there than healthy individuals or those with other rheumatic diseases.

Why Tender Points Still Matter

Even though the 2010 and later criteria for fibromyalgia rely less on tender point counts, the physical exam remains valuable:

• Objective measure
  Tender points offer a semi‐objective way to assess how sensitive someone is to pressure. That helps confirm whether pain is widespread or focused in certain spots.

• Differential diagnosis
  Identifying tender points can help distinguish fibromyalgia from other conditions like arthritis, nerve entrapments or myofascial pain.

• Tracking changes over time
  Counting tender points during follow‐up visits can show whether a patient’s sensitivity is improving, stable or worsening.

• Guiding treatment
  Noting which regions are most tender helps tailor therapies—whether manual techniques (e.g., massage, myofascial release), targeted exercises or pain‐modulating medications.

Performing a Tender Point Exam

When you see a clinician for evaluation, here’s what typically happens:

1. The examiner uses their thumb or a pressure algometer to press each point with about 4 kg of force.
2. You report whether it feels painful (sharp, aching or “unusual”) or just pressure.
3. The examiner notes a positive tender point only if you say it hurts—your normal tolerance of pressure wouldn’t count.

The 9 Pairs of Tender Points

Below is a standard list of the 18 locations, each tested bilaterally. Press firmly but carefully:

• Occiput: Suboccipital muscle insertions at the base of the skull
• Low cervical: Anterior aspects of C5–C7 intertransverse spaces
• Trapezius: Midpoint of the upper border of the muscle
• Supraspinatus: Above the scapular spine near the medial border
• Second rib: At the costochondral junctions of the second ribs
• Lateral epicondyle: 2 cm distal to the epicondyles of the humerus
• Gluteal: Upper outer quadrants of the buttocks in the anterior fold
• Greater trochanter: Posterior to the trochanteric prominence
• Knee: Medial fat pad proximal to the joint line

Fibromyalgia tender points 11 of 18 locations map

Clinicians sometimes use a simple diagram—a “Fibromyalgia tender points 11 of 18 locations map”—to mark which spots hurt. You can find printable versions online or ask your doctor to show you a copy. Tracking these points visually:

• Helps you understand where your body is most sensitive
• Provides a clear starting point for tailored physical therapy
• Encourages shared decision‐making between you and your healthcare team

Integrating Tender Points with Modern Criteria

Since 2010, the ACR has recommended the Widespread Pain Index (WPI) and Symptom Severity Scale (SSS) instead of tender points alone. Yet, many clinicians still:

• Use tender point exams as a quick, in‐office check
• Combine findings with symptom questionnaires about fatigue, sleep, memory and mood
• Consider tender points a supportive piece of the overall puzzle

This hybrid approach ensures you receive a thorough evaluation without relying on any single test.

Limitations and Context

No test is perfect. Tender point exams have some drawbacks:

• Subjectivity
  Your pain report depends on mood, stress levels and even the time of day.

• Examiner variability
  Different clinicians may apply slightly different pressure or test points in varied order.

• Overlapping conditions
  Other disorders (e.g., chronic fatigue syndrome, myofascial pain syndrome) may also show tender spots.

That’s why a comprehensive evaluation—including medical history, laboratory tests (to rule out inflammation or metabolic causes) and a full physical exam—is crucial.

When to Seek Further Evaluation

If you experience persistent widespread pain, fatigue, sleep problems or “fibro fog,” it may be time to talk to a healthcare professional. For an easy starting point, consider a free, online symptom check, using the doctor approved Ubie Symptom Checker. This tool can help you:

• Clarify which symptoms matter most
• Identify patterns you might not notice on your own
• Prepare a concise summary for your next doctor’s appointment

Remember, an online tool isn’t a substitute for a medical exam. If you have any severe, worsening or life‐threatening symptoms—such as chest pain, rapid weight loss, sudden weakness, high fever or thoughts of harming yourself—please seek medical attention right away.

Takeaway

Tender points may no longer define fibromyalgia, but they remain a practical aid in physical exams. By knowing the original 1990 criteria and using a fibromyalgia tender points 11 of 18 locations map, you and your clinician can:

• Observe pain sensitivity in a structured way
• Distinguish fibromyalgia from other pain disorders
• Monitor progress over time

Always combine tender point findings with a full symptom review and medical testing. If you suspect fibromyalgia or another chronic pain condition, talk to your doctor. Early evaluation and a tailored care plan can make a real difference in managing symptoms and improving quality of life.