The two most common forms are osteoarthritis and rheumatoid arthritis
Osteoarthritis happens when the cartilage that cushions your joints wears down over time. This is the most common type — it usually develops slowly as you age, though it can also follow an injury. Your joints may feel stiff in the morning or after sitting still, and they often hurt more when you use them.
Rheumatoid arthritis is different. It is an autoimmune condition, meaning your immune system mistakenly attacks the lining of your joints. This causes inflammation, pain, and swelling that can develop quickly over weeks or months. It often affects the same joints on both sides of your body — both hands, both knees — and can make you feel tired or feverish.
These two account for the vast majority of arthritis cases, but there are other types worth knowing about. Understanding which type you have matters because the treatments differ significantly.
Key Takeaways
- Osteoarthritis is wear-and-tear damage to cartilage that usually develops gradually with age, while rheumatoid arthritis is an autoimmune disease that can develop quickly and affects both sides of the body.
- Gout is caused by uric acid crystals building up in joints and typically strikes suddenly in one joint, often the big toe.
- Lupus and other systemic conditions can cause arthritis as one symptom among many affecting different body systems.
- A doctor can narrow down which type you have through blood tests, imaging, and a description of when your symptoms started and how they feel.
- Treatment approaches vary widely — osteoarthritis focuses on managing pain and keeping joints moving, while rheumatoid arthritis requires medications that calm the immune system.
Gout: sudden pain from uric acid crystals
Gout is a form of arthritis caused by uric acid building up in your blood and forming sharp crystals in your joints. It typically strikes without warning — you might wake up with severe pain, redness, and swelling in one joint, most often the big toe. The attack can last days or weeks, then disappear completely until the next one.
Gout is more common in men and often runs in families. Certain foods (red meat, organ meats, some seafood), alcohol, and dehydration can trigger attacks. Unlike osteoarthritis or rheumatoid arthritis, gout can often be managed by lowering uric acid levels through diet changes or medication, which can prevent future attacks.
Lupus and other systemic forms of arthritis
Lupus (systemic lupus erythematosus, or SLE) is an autoimmune disease that affects multiple body systems, not just joints. It causes joint pain and swelling, but also rashes, fatigue, fever, and sometimes problems with the heart, kidneys, or lungs. It is more common in women and people of color.
Psoriatic arthritis develops in some people who have psoriasis, a skin condition that causes red, scaly patches. The arthritis can appear before, during, or after the skin symptoms show up. It can affect any joint and sometimes causes swelling in whole fingers or toes.
Ankylosing spondylitis primarily affects the spine, causing pain and stiffness that is often worse in the morning or after rest. Over time, vertebrae can fuse together, limiting how much you can bend. It is more common in men and often runs in families.
These systemic forms require different treatment approaches than osteoarthritis because they involve the immune system or affect multiple parts of the body.
Other types: secondary arthritis and less common forms
Secondary arthritis develops as a result of another condition or injury. For example, arthritis can develop in a joint that was broken years earlier, or in someone with hemophilia (a bleeding disorder) after repeated bleeding into joints.
Infectious arthritis occurs when bacteria, viruses, or fungi enter a joint and cause inflammation. This usually develops suddenly with severe pain, swelling, and warmth in the affected joint, sometimes with fever. It requires prompt treatment to prevent permanent damage.
Less common types include juvenile idiopathic arthritis (arthritis in children), reactive arthritis (which follows a bacterial infection elsewhere in the body), and septic arthritis (a serious infection inside a joint). Each has its own pattern of symptoms and treatment approach.
How doctors figure out which type you have
Your doctor will start by asking when your symptoms began, which joints hurt, and whether the pain is constant or comes and goes. They will ask about morning stiffness, whether family members have arthritis, and whether you have other symptoms like rashes or fatigue.
Blood tests can show signs of inflammation and help identify autoimmune forms of arthritis. For rheumatoid arthritis, doctors look for specific antibodies like rheumatoid factor or anti-CCP. For lupus, they test for antinuclear antibodies (ANA). For gout, they may measure uric acid levels.
Imaging — X-rays, ultrasound, or MRI — shows the structure of your joints and can reveal cartilage damage, bone changes, or inflammation. In some cases, a doctor may take a sample of fluid from an inflamed joint to check for crystals (gout) or infection.
This combination of history, blood work, and imaging usually points clearly toward one type of arthritis, though some people have more than one form.
Why the type matters for treatment
Osteoarthritis treatment focuses on managing pain and keeping joints moving. This might include over-the-counter pain relievers, heat or cold therapy, physical therapy, and weight management if that applies to you.
Rheumatoid arthritis and other autoimmune forms require medications that suppress the immune system's attack on joints. These are called disease-modifying antirheumatic drugs (DMARDs) and biologics. Starting these early can slow or stop joint damage.
Gout treatment involves both managing acute attacks (with anti-inflammatory medications) and lowering uric acid levels long-term (with medications like allopurinol or febuxostat, or through diet changes).
Systemic forms like lupus or ankylosing spondylitis may need medications that address symptoms throughout the body, not just in joints. Some people benefit from physical therapy, occupational therapy, or lifestyle changes alongside medication.
What to expect when you see a doctor about joint pain
Bring a list of which joints hurt, when the pain started, and how it has changed. Note whether mornings are worse, whether rest helps or makes it worse, and whether you have other symptoms like fatigue, rashes, or fever. If arthritis runs in your family, mention that.
Your doctor may refer you to a rheumatologist — a specialist in arthritis and autoimmune diseases — especially if the initial tests suggest an autoimmune form. Rheumatologists have extra training in diagnosing and treating these conditions and can often start you on the right medication sooner.
Getting an accurate diagnosis early matters because some forms of arthritis, especially rheumatoid arthritis, can cause permanent joint damage if left untreated. Once you know which type you have, your treatment plan can be tailored to slow or stop the damage and help you stay active.
Frequently Asked Questions
Can you have more than one type of arthritis at the same time?
Yes. Some people develop osteoarthritis in their knees while also having rheumatoid arthritis in their hands. Others may have gout and osteoarthritis. Your doctor can identify multiple types through blood tests and imaging, and treatment will address each one.
Is arthritis always painful?
Not always. Some people have mild arthritis with little or no pain, especially in early stages. Others have pain that comes and goes. The amount of pain does not always match the amount of damage visible on imaging, so pain levels vary widely between people.
Can arthritis develop suddenly or does it always come on slowly?
It depends on the type. Osteoarthritis usually develops gradually over years. Rheumatoid arthritis, gout, and infectious arthritis can all develop suddenly over days or weeks. If your joint pain appeared without warning, tell your doctor — that timing helps narrow down the type.
Does the type of arthritis I have affect my chances of getting another type later?
Having one type does not prevent you from developing another. For example, someone with rheumatoid arthritis can still develop osteoarthritis as they age. Your doctor can monitor for changes in your symptoms that might suggest a second type developing.
Are some types of arthritis hereditary?
Some types run in families more than others. Rheumatoid arthritis, lupus, gout, and ankylosing spondylitis all have genetic components, meaning you are more likely to develop them if a close relative has them. Having the genetic risk does not mean you will definitely develop arthritis, but it increases the chance.