Boots WebMD Partners in Health
Return To Boots

Arthritis health centre

How do doctors diagnose rheumatoid arthritis?

BMJ Group Medical Reference

Doctors sometimes find it difficult to diagnose rheumatoid arthritis. This is because the symptoms can start very slowly, and there isn't a test that shows whether or not you have it. Your doctor will need to collect lots of types of information to make a diagnosis.

Your doctor may do the following things to see if you have rheumatoid arthritis.

  • Ask you questions about your joints: Your doctor will want to know if your joints are stiff or if they get swollen, and how long you have had problems.

  • Examine your joints: Your doctor will look to see if your joints are swollen and how easily they move.

  • Do a blood test: Some people with rheumatoid arthritis have a protein in their blood called rheumatoid factor. Your doctor may test for this. But if you don't have this protein, you could still have rheumatoid arthritis.

  • Do x-rays of your joints: X-rays can show whether your bones are getting thin or changing shape.

After collecting this information, your doctor may use the following list to make a diagnosis. If you have four or more of the signs of rheumatoid arthritis that are on the list below, it is very likely that you have the condition: [21]

  • Morning stiffness in your joints that lasts for more than an hour

  • Swelling and inflammation in three or more joints, that lasts more than six weeks

  • Swelling and inflammation in your hand joints or wrists, that lasts more than six weeks

  • Symptoms in the same joints on both sides of your body, that lasts more than six weeks

  • Rheumatoid nodules (these are firm lumps under your skin)

  • Rheumatoid factor in the blood (many people with rheumatoid arthritis have this protein in their blood)

  • X-rays showing changes in your joints (x-rays can show if your bones are getting thin and changing shape).

Glossary

inflammation

Inflammation is when your skin or some other part of your body becomes red, swollen, hot, and sore. Inflammation happens because your body is trying to protect you from germs, from something that's in your body and could harm you (like a splinter) or from things that cause allergies (these things are called allergens). Inflammation is one of the ways in which your body heals an infection or an injury.

X-ray

X-rays are pictures taken of the inside of your body. They are made by passing small amounts of radiation through your body and then onto film.

For more terms related to Rheumatoid arthritis

Citations

For references related to Rheumatoid arthritis click here.
Last Updated: June 22, 2012
This information does not replace medical advice.  If you are concerned you might have a medical problem please ask your Boots pharmacy team in your local Boots store, or see your doctor.

Stay informed

Sign up for BootsWebMD's free newsletters.
Sign Up Now!

WebMD Video: Now Playing

Rheumatoid arthritis (RA) facts

Rheumatoid arthritis (RA) facts

Learn how to manage stiffness and swelling from rheumatoid arthritis.

Popular Slideshows & Tools on Boots WebMD

woman looking at pregnancy test
Early pregnancy symptoms
donut on plate
The truth about sugar addiction
woman holding hair
Natural help for dry or damaged hair
woman in bikini
Get ready for swimsuit season
hand extinguishing cigarette
13 best tips to stop smoking
Immune-boosting foods
The role of diet
79x79_not_good_for_you.jpg
18 secrets men want you to know
boy looking at broccoli
Quick tips for feeding picky eaters
hamburger and fries
A guide for beginners
salmon dinner
A diet to boost your mood & energy
polka dot dress on hangar
Lose weight without dieting