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Rheumatic Flare: Causes, Symptoms & Treatment

A rheumatic flare is a sudden worsening of a rheumatic disease, causing intense joint pain, swelling, and stiffness that can last days to weeks.

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Things worth knowing about "Rheumatic flare"

A rheumatic flare is a sudden worsening of a rheumatic disease, causing intense joint pain, swelling, and stiffness that can last days to weeks.

What Is a Rheumatic Flare?

A rheumatic flare (also called a disease flare or flare-up) is a temporary but significant increase in disease activity in a person living with a rheumatic condition. During a flare, joint pain, swelling, stiffness, and loss of function intensify considerably. Flares can last from days to several weeks and typically alternate with periods of low disease activity or remission.

Causes and Triggers

The exact mechanisms that trigger a rheumatic flare are not always fully understood. Common triggers and contributing factors include:

Infections: Bacterial or viral illnesses can activate the immune system and provoke a flare.
Stress: Physical and emotional stress is one of the most frequently reported triggers.
Weather changes: Cold, damp weather or sudden weather shifts are commonly reported by patients.
Inadequate medication: Stopping or reducing disease-modifying drugs can lead to a flare.
Physical overexertion: Excessive activity or improper loading of affected joints.
Diet: In conditions such as gout, foods high in purines can trigger flares.
Hormonal changes: Particularly in women, pregnancy, menstruation, or menopause can play a role.

Symptoms of a Rheumatic Flare

Symptoms vary depending on the underlying condition, but common signs of a flare include:

Joint swelling and redness
Intense joint pain, even at rest
Morning stiffness lasting more than 30 minutes
Warmth around the affected joints
Fatigue and exhaustion
Reduced range of motion and difficulty performing daily tasks
Occasionally mild fever or a general feeling of being unwell

Conditions Associated With Flares

Rheumatic flares occur across a range of inflammatory and autoimmune conditions, including:

Rheumatoid Arthritis (RA): One of the most common chronic inflammatory joint diseases.
Psoriatic Arthritis: Joint inflammation associated with psoriasis.
Systemic Lupus Erythematosus (SLE): A systemic autoimmune disease affecting multiple organs.
Ankylosing Spondylitis: Inflammatory disease primarily affecting the spine.
Gout: Joint inflammation triggered by the deposition of uric acid crystals.

Diagnosis

The diagnosis of a rheumatic flare is primarily clinical, made by a rheumatologist based on symptoms and history. Supporting investigations include:

Blood tests: Inflammatory markers such as CRP (C-reactive protein) and ESR (erythrocyte sedimentation rate) are often elevated. In RA, rheumatoid factor and anti-CCP antibodies may also be measured.
Imaging: Ultrasound or MRI of the joints can reveal inflammation and fluid accumulation.
Clinical assessment: Counting swollen and tender joints helps quantify disease activity.

Treatment of a Rheumatic Flare

The goal of treatment is to quickly bring the flare under control, relieve pain, and prevent long-term joint damage. Treatment depends on the underlying condition and the severity of the flare.

Pharmacological Treatment

Corticosteroids: Short-term high-dose corticosteroids (oral or injected directly into the joint) are highly effective at rapidly reducing inflammation.
Nonsteroidal Anti-inflammatory Drugs (NSAIDs): Medications such as ibuprofen or diclofenac help relieve pain and inflammation.
Disease-Modifying Antirheumatic Drugs (DMARDs): Adjusting long-term therapy with drugs such as methotrexate or biologics may be necessary to prevent future flares.

Non-Pharmacological Measures

Rest and joint protection during acute inflammation
Cold therapy (ice packs or cooling compresses) to reduce pain and swelling
Physiotherapy to maintain joint mobility between flares
Stress management and psychological support
Dietary adjustments, such as an anti-inflammatory Mediterranean-style diet

When to See a Doctor

Patients should seek medical attention promptly if they experience:

Sudden and significant increase in joint pain and swelling
Morning stiffness lasting more than one hour
Fever alongside joint symptoms
No improvement despite their usual flare medication

References

Smolen JS et al. – Rheumatoid arthritis. Nature Reviews Disease Primers, 2018. DOI: 10.1038/nrdp.2018.1
Aringer M et al. – 2019 European League Against Rheumatism/American College of Rheumatology Classification Criteria for Systemic Lupus Erythematosus. Arthritis & Rheumatology, 2019.
Smolen JS et al. – EULAR recommendations for the management of rheumatoid arthritis with synthetic and biological disease-modifying antirheumatic drugs. Annals of the Rheumatic Diseases, 2020.

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