Types of Arthritis: Clarifying Inflammatory vs. Non-Inflammatory Conditions

Note: The original title "Non-Inflammatory Arthritis" is misleading, as several conditions listed are inflammatory. Below is a corrected categorization of common arthritis types:

Degenerative (Non-Inflammatory)

1. Osteoarthritis

Most common type; wear-and-tear damage to joint cartilage. Symptoms: joint pain, stiffness, swelling, reduced flexibility.

Inflammatory Arthritis Types

2. Rheumatoid Arthritis

Autoimmune condition causing joint inflammation, pain, swelling, and potential joint deformity.

3. Psoriatic Arthritis

Occurs in people with psoriasis. Symptoms: joint pain, swelling, stiffness, skin rashes.

4. Gout

Uric acid crystal buildup in joints. Symptoms: sudden, severe pain, redness, swelling, heat.

5. Ankylosing Spondylitis

Primarily affects spine and sacroiliac joints, causing chronic back pain and stiffness.

6. Reactive Arthritis

Triggered by infection elsewhere (e.g., UTI, STD). Symptoms: joint pain, swelling, eye inflammation.

7. Enteropathic Arthritis

Associated with inflammatory bowel disease (Crohn's, ulcerative colitis). Symptoms: joint pain, back pain.

8. Juvenile Idiopathic Arthritis

Childhood-onset chronic joint inflammation. Symptoms: joint pain, swelling, stiffness, fever, rash.

Other Conditions Often Grouped with Arthritis

9. Fibromyalgia

Chronic widespread musculoskeletal pain, fatigue, sleep issues, cognitive difficulties—not a true arthritis (no joint inflammation).

10. Polymyalgia Rheumatica

Inflammatory condition causing muscle pain/stiffness in shoulders, neck, hips—primarily affects older adults.

Accurate diagnosis by a rheumatologist is essential, as treatment varies significantly between inflammatory and non-inflammatory types.