Comparing Fibromyalgia and Rheumatoid Arthritis: Causes and Key Symptoms

July. 16,2025

This article compares fibromyalgia and rheumatoid arthritis, highlighting their causes, common symptoms, and links. It emphasizes the importance of early diagnosis and professional medical advice for managing these chronic conditions. Understanding their similarities and differences can aid in better treatment strategies and improved patient outcomes.

Comparing Fibromyalgia and Rheumatoid Arthritis: Causes and Key Symptoms

Fibromyalgia versus Rheumatoid Arthritis: Understanding the Differences and Similarities

Fibromyalgia and rheumatoid arthritis are both long-term conditions that lead to persistent pain, but they differ in their causes and manifestations. People with rheumatoid arthritis have an increased likelihood of developing fibromyalgia, indicating a possible link between the two. While some symptoms overlap—such as fatigue and widespread discomfort—the underlying causes and treatments vary. Recognizing the subtle differences is essential for accurate diagnosis and effective management. Below is an overview of these conditions, highlighting their origins and primary symptoms.

Fibromyalgia and Rheumatoid Arthritis: Causes and Symptoms

Fibromyalgia
Common signs of fibromyalgia include:

  • Tender, sunburned-feeling skin
  • Pain in muscles and tissues across the thighs, torso, arms, back, buttocks, and scalp
  • Trigger points that are sore and radiate pain when pressed
  • Widespread pain affecting one or both sides of the body
  • Digestive issues like constipation and diarrhea
  • Headaches and dizziness
  • Restless leg syndrome
  • Intense menstrual pain
  • Memory problems and difficulty concentrating
  • Extreme sensitivity to temperatures, sounds, and noises

Factors that may contribute to fibromyalgia include:

  • Genetics
  • Other health conditions
  • Physical or emotional trauma
  • Posttraumatic stress disorder
  • Gender (more common in women)
  • Prolonged sitting or standing
  • Chronic mood disorders like anxiety and depression

Rheumatoid arthritis
Key symptoms associated with rheumatoid arthritis include:

  • Severe swelling in joints across the body
  • Pain and tenderness limited to joints
  • Pain on both sides of the body, ranging from mild to severe
  • Persistent fever
  • Anemia

The exact cause remains unknown, but certain factors raise the risk of developing rheumatoid arthritis, such as:

  • Obesity
  • Smoking
  • Gender (more common in women)
  • Genetic predisposition
  • History of trauma

Co-occurrence of fibromyalgia and rheumatoid arthritis is common. Studies suggest approximately 20–30% of those with rheumatoid arthritis also experience fibromyalgia. The chronic symptoms of rheumatoid arthritis may sensitize the nervous system, possibly leading to fibromyalgia development. Prompt medical consultation is vital upon noticing symptoms of either condition to ensure accurate diagnosis and appropriate treatment.