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in Health &middot September 26, 2018

What Is the Difference between Osteoarthritis and Rheumatoid Arthritis?

The biggest snag I run into when I tell people that I have rheumatoid arthritis is that people often don’t know what that is. Usually, the response is something like, “So? My grandma has that.” Now, obviously it’s possible that grandmas have rheumatoid arthritis. I know quite a few who do. But this is usually said with the implication that everyone gets rheumatoid arthritis as they get older, which isn’t true. Instead, quite a few people get osteoarthritis as they age. So let’s figure this out and talk about osteoarthritis vs rheumatoid arthritis.

Arthritis patient and blogging Kate the (Almost) Great shares the answer to the question she gets the most: What's the difference between osteoarthritis and rheumatoid arthritis? She also shares who can get each and symptoms of each, as well as resources.

Osteoarthritis vs Rheumatoid Arthritis: What’s the Difference?

Osteoarthritis – Osteoarthritis is the type of arthritis that most people think about when they think about arthritis. Essentially, it’s general wear-and-tear of the joints. “It occurs when the protective cartilage on the ends of your bones wears down over time” (x). According to the Mayo Clinic, “the slick surface of the cartilage becomes rough. Eventually, if the cartilage wears down completely, you may be left with bone rubbing on bone” (x).

What Sjögren’s Syndrome Is: A Beginner’s Guide

Rheumatoid arthritis – Rheumatoid arthritis is an autoimmune disease in which the immune system mistakenly attacks the body, mostly the joints but it can also attack organs, eyes, and skin (x).

The Mayo Clinic says, “Unlike the wear-and-tear damage of osteoarthritis, rheumatoid arthritis affects the lining of your joints, causing a painful swelling that can eventually result in bone erosion and joint deformity (x). The inflammation associated with rheumatoid arthritis is what can damage other parts of the body as well” (x).

While osteoarthritis only affects the joints, in 40% of rheumatoid arthritis patients, other parts of the body are affected, as well (x).

What’s Chronic Pain? What You Should Know If You Love Someone with It

Who Has Osteoarthritis or Rheumatoid Arthritis?

Who might have osteoarthritis? According to the Mayo Clinic, some risk factors of osteoarthritis are age (which is why people tend to associate it with older people), obesity, joint injuries, genetics, or bone deformities (x). Additionally, having other bone or joint issues can lead to osteoarthritis (x). It should be noted that these are risk factors and not guarantees or limitations. You don’t need to be over 50 to have osteoarthritis. I know people who have it who were/are athletes or were in car accidents. And my ankle condition actually puts me at risk for osteoarthritis in my ankle.

What Is Considered a Chronic Illness? And Other Chronic Illness Basics

Who might have rheumatoid arthritis? According to the Mayo Clinic, some risk factors of rheumatoid arthritis are gender, age, family history, smoking, environmental exposures, and obesity (x). Women are more likely to have it than men, RA is more likely to develop between the ages of 40 and 60, and a family history of autoimmune diseases makes you more likely to have RA (x).

When I was diagnosed, I was the only family member on my dad’s side (that we know of) who had an autoimmune disease, but since then, others have been diagnosed with different autoimmune diseases. Additionally, certain environmental exposures such as asbestos and silica can lead to RA, although this is poorly understood (x).

6 Tips for How To Accept a Chronic Illness

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Signs You Have Arthritis

Osteoarthritis symptoms: According to the Mayo Clinic, symptoms include pain during or after movement, joint tenderness when pressure is applied, joint stiffness first thing in the morning or after a period of inactivity, loss of flexibility, feeling or hearing a grating sensation when the joint moves, or bone spurs (x).

Specific joints with osteoarthritis might react slightly differently. For example, hip arthritis symptoms include pain in the groin area or sometimes on the inside of the knee or thigh (x). Knee osteoarthritis feels like grating or scraping when moving the knee (x). In the fingers, you might develop bone spurs around the affected joints, which can cause swelling, tenderness, and redness (x).

As you can see, symptoms can vary depending on the affected joint, so be sure to bring up your symptoms to your doctor, even if you think they might not be relevant.

Life with Chronic Illness: One Patient’s Life with 6 Illnesses

Rheumatoid arthritis symptoms: According to the Mayo Clinic, rheumatoid arthritis symptoms include joints that are tender, warm, and swollen; joint stiffness that is worst in the morning and after periods of inactivity; and fever, fatigue, and weight loss (x). Usually, in RA patients, more than one joint is affected, including the small joints like the wrist, certain joints in the hand, and the feet (x).

Additionally, often the same joints on both sides of the body are affected (x). For example, both of my knees bother me. Only one has needed surgery, but both are affected. There are other RA symptoms that come from long-term high levels of inflammation in the body, such as eye dryness, mouth dryness, gum irritation, inflammation in the lungs, inflammation in blood vessels, and anemia (x).

Personally, a lot of my other chronic illnesses are due to my RA. It took 9 years since symptoms started before I received my diagnosis, and then it took another 2.5 years before I found a treatment that worked for me.

What you should know about TMJ arthritis

The chronically ill workbook, a workbook to help you better manage & understand your chronic illness, www. kate the almost great .com

Resources for Arthritis Patients

Looking for some support whether you have osteo or rheumatoid arthritis? Here are some resources:

Arthritis Foundation – The Arthritis Foundation “helps conquer everyday battles through life-changing information and resources, access to optimal care, advancements in science and community connections. Our goal is to chart a winning course, guiding families in developing personalized plans for living a full life – and making each day another stride towards a cure. We also publish Arthritis Today, the award-winning magazine that reaches 4.2 million readers” (x). They work on advocacy, scientific discovery, helping and supporting arthritis patients, and connecting the arthritis community.

Arthritis National Research Foundation – The Arthritis National Research Foundation focuses mostly on, well, research! More specifically, “The Arthritis National Research Foundation provides arthritis research grants to scientists at major universities and research institutes across America. One- and two-year arthritis research grants allow these newer scientists to develop their important research to a stage where it can be continued and further supported by other national agencies” (x).

Here are some posts I’ve written that can help you:

  • 7 Arthritis Myths Busted: Do You Know The Truth?
  • 9 Arthritis Products That Help My Rheumatoid Arthritis
  • Arthritis Diagnosis: Diagnosis Stories + The Diagnostic Process Explained
  • Why Is Rheumatoid Arthritis Hard To Diagnose?
  • Helping Someone with RA
  • What You Need To Know about Arthritis
  • Beginner’s Guide: Seronegative Rheumatoid Arthritis
  • Answering Questions about Arthritis
  • What You Should Know About TMJ Arthritis
  • What Does Arthritis Pain Feel Like?
  • Beginner’s Guide: Rheumatoid Arthritis Flare Up
  • How Arthritis Affects the Body
  • Arthritis Glossary: Frequently Used Words
  • All of my points about arthritis
Free printable to help you prepare for chronic illness medical appointments

Like this post? Check out:

10 Things I Wish I Knew When I Received My Rheumatoid Arthritis Diagnosis, The Lifestyle Changes I Made for My Rheumatoid Arthritis, My Rheumatoid Arthritis Treatment + How I Got There, Problems from My Inflammatory Arthritis + How To Deal with Them

Osteo vs. Rheumatoid Arthritis, Key differences between them
How OA and RA Differ
What's the difference between osteoarthritis and rheumatoid arthritis?
Differences between osteoarthritis and rheumatoid arthritis
Kate Mitchell

Kate Mitchell is a blogger, chronic illness patient, and advocate who helps people understand chronic illness and helps chronic illness patients live their best lives.

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SHARING YOUR HEALTH EXPERIENCES PUBLICLY⁣⁣⁣ ⁣ I sh SHARING YOUR HEALTH EXPERIENCES PUBLICLY⁣⁣⁣
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I share my personal health experiences online, which I find it somewhat easy to do because I've been talking publicly - albeit to a smaller audience - since my health problems started in 2001. ⁣⁣⁣
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If you share something online, you need to be prepared for people to ask questions or argue with you. Should they? No. Will that stop them? Also do. ⁣
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That's one of the reasons that talking online about what can be trauma is not easy or for everyone. That's why it's important to practice self-care and to consciously think about what you want to share online before you do it. ⁣⁣⁣
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For example, I generally only talk publicly about a health situation once it has passed, especially if it's an emergency. I also make sure that I'm in a good place mentally before I talk about it. That way, I don't share things I'll regret sharing publicly later. It also helps me be less anxious about sharing these details.⁣⁣⁣
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And I don't share everything! There's lot of stuff that I haven't talked about not only online but with people in real life. It might seem like I share everything I've experienced, but I don't. ⁣
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I’m Kate, a chronic illness patient and advocate sharing what my life is like with 10+ chronic illnesses. Follow me for more and check out my blog at katethealmostgreat.com⁣⁣.⁣
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IDs: Kate works on a laptop offscreen. She's a redheaded white woman wearing a beige-and-navy striped sweater, silver Claddagh necklace, and pink glasses.⁣
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#ChronicallyIll #RheumatoidArthritis #ChronicPain #Endometriosis #SjogrensSyndrome
Week 18 of 2026 Weekly 1️⃣ Cross-stitch and IVIG Week 18 of 2026 Weekly 

1️⃣ Cross-stitch and IVIG 
2️⃣ Another trip to the foot doctor. We’re officially in Try To Avoid My 6th Foot Surgery mode 🤞🏻 
3️⃣ At least there were lilacs?

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I’m Kate, a chronic illness patient and advocate sharing what my life is like with 10+ chronic illnesses. Follow me for more and check out my blog at katethealmostgreat.com⁣⁣.

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IDs: 
1️⃣ Looking down at Kate’s lap. Tubes are coming out of her shirt. She’s working on a cross stitch.
2️⃣ Kate takes a selfie in a doctor’s office. She’s wearing a lilac mask.
3️⃣ A lilac bush

#IVIG #CrossStitching #ChronicIllness #ChronicallyIll #InvisibleIllness
FAQ: Have I Tried Yoga for My Pain? This is a se FAQ: Have I Tried Yoga for My Pain? 

This is a series where I answer questions I frequently get about my rheumatoid arthritis. I am not a medical professional and this is not medical advice - just saying the truth about my body in particular. 

Video: Kate speaks to camera. There are captions. A black text box reads “FAQ: Have I Tried Yoga for My Pain?” 

#RheumatoidArthritis #AutoimmuneArthritis #Arthritis #ArthritisAwarenessMonth
May is Arthritis Awareness Month, which is the per May is Arthritis Awareness Month, which is the perfect time to remind people of these facts. Here's today's fact.⁣
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Like, comment, and share to spread awareness 💖⁣
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I’m Kate, a chronic illness patient and advocate sharing what my life is like with 10+ chronic illnesses. Follow me for more and check out my blog at katethealmostgreat.com⁣⁣.⁣
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ID: Fact or Fiction? Let's Check! ⁣
Fiction⁣
Arthritis only affects people as they age.⁣
Fact⁣
Arthritis can affect anyone at any age, including kids as young as 3.⁣
katethealmostgreat⁣
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#ArthritisAwareness #Arthritis #RheumatoidDisease #RheumatoidArthritis #ArthritisAwarenessMonth
I’ve been on IVIG since September. So what does su I’ve been on IVIG since September. So what does success look like? ⁣
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*This is all just for me and my case!*⁣
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1️⃣ I haven't gotten sick at all since I started, not even a cold. ⁣
2️⃣ My lungs are clear of any ground glass opacities, which was what pushed us over to finally doing IVIG regularly. ⁣
3️⃣ We feel better about saying that I don't have any infections. Because symptoms are often signs of the body fighting an infection, we couldn't always trust that I wasn't sick because I didn't have symptoms. ⁣
4️⃣ Because of all of this, we're increasing my next Rituxan dose! This will mean better RA symptoms and hopefully no new illnesses for a few years.⁣
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I’m Kate, a chronic illness patient and advocate sharing what my life is like with 10+ chronic illnesses. Follow me for more and check out my blog at katethealmostgreat.com⁣⁣.⁣
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ID: A bunch of IVIG supplies, including a pump. ⁣
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#ChronicallyIll #ChronicIllness #ChronicPain #AutoimmuneDisease #Autoimmune
Week 17 of 2026 Weekly 1️⃣ Making some real progr Week 17 of 2026 Weekly

1️⃣ Making some real progress with this cross stitch
2️⃣ Walking casts have multiple uses, including holding down your mat! (Don’t worry - I only did broken-foot-compatible things) 

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I’m Kate, a chronic illness patient and advocate sharing what my life is like with 10+ chronic illnesses. Follow me for more and check out my blog at katethealmostgreat.com⁣⁣.

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IDs:
1️⃣ An in-progress cross stitch. You can see that Kate stitched 2 bears.
3️⃣ A walking cast lies on a black yoga mat 

#CrossStitching #CrossStitcher #RheumatoidArthritis #Osteoporosis #LoopsAndThreads
Can we talk about fatigue for a sec? ⁣⁣⁣ ⁣ Fatigue Can we talk about fatigue for a sec? ⁣⁣⁣
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Fatigue is so much more than being tired. It's sleeping 10 hours at night and then struggling to stay awake during the day. It's trouble focusing because, even though you just had 3 cups of coffee, you're thinking about sleep. It's needing to factor rest in during the day because you have plans at night. ⁣⁣⁣
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It's a lot. ⁣⁣⁣⁣
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It's no secret that I have multiple chronic illnesses. But did you know that all of them - all 11+ of them - have fatigue as a symptom? Sometimes the fatigue is worse than the pain and, uh, I live with a lot of pain.⁣⁣
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This picture was taken when I was super anemic and waiting for 4 iron infusions. Now, months later, I can see it. And I also don't know how I got through the months of that anemia. ⁣
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I’m Kate, a chronic illness patient and advocate sharing what my life is like with 10+ chronic illnesses. Follow me for more and check out my blog at katethealmostgreat.com⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣.⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣
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ID: Kate takes a selfie. She's a redheaded white woman wearing a gray sweater and pink glasses.⁣
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#ChronicallyIll #RheumatoidArthritis #Fibromyalgia #Endometriosis #POTS
Week 16 of 2026 This week had EVERYTHING 1️⃣ Cr Week 16 of 2026 

This week had EVERYTHING

1️⃣ Cross-stitch during virtual mass 
2️⃣ Tuesday featured a 90-minute meeting during work and then an hour advocacy work call after my day job (both were good!)
3️⃣ Wednesday started at my foot doctor’s office and I left in a walking boot. Hopefully these 3 fractured bones will heal correctly this time 🤞🏻
4️⃣ Thursday started back at MGH for my annual neurology appointment + foot CT scan
5️⃣ Then I went up to Maine … 
6️⃣ to celebrate my grandma’s 85th birthday! 

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I’m Kate, a chronic illness patient and advocate sharing what my life is like with 10+ chronic illnesses. Follow me for more and check out my blog at katethealmostgreat.com⁣⁣.

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IDs: 
1️⃣ In the foreground is an in-progress cross-stitch piece. The background shows an open laptop streaming Catholic mass.
2️⃣ Kate takes a selfie. She’s a white woman with auburn hair and green glasses.
3️⃣ Kate takes a selfie in a doctor’s office. 
4️⃣ Kate takes a selfie in a car.
5️⃣ Kate takes a selfie snuggling with a golden retriever.
6️⃣ Kate and her cousins stand with their grandmother in front of a sign saying "Happy Birthday." 

#CrossStitch #ChronicPain #ChronicallyIll #InvisibleIllness
My face comes with subtitles, so .. ⁣ ⁣ ⬛⁣⁣⁣⁣⁣ ⁣ I My face comes with subtitles, so .. ⁣
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I’m Kate, a chronic illness patient and advocate sharing what my life is like with 10+ chronic illnesses. Follow me for more and check out my blog at katethealmostgreat.com⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣⁣.⁣
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ID: Kate drinks coffee giving side eye. White text box reads "My Face When Someone Says 'You Shouldn't Need a Cane At Your Age'" ⁣
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#ChronicPain #ChronicallyIll #RheumatoidArthritis #PosturalOrthostaticTachycardiaSyndrome #Fibromyalgia
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