Multiple Severe Arthralgia in Influenza

Typical Influenza Symptoms

• The Centers for Disease Control and Prevention implies that influenza typically presents with fever, which is the paramount symptom, peaking within 24 hours and lasting 1-5 days, dry cough, myalgia affecting mainly the back and limbs, and other symptoms include hot and moist skin, flushed face, injected eyes, and hyperemic mucous membranes 2

Arthralgia in Viral Infections

Influenza

• Influenza primarily causes myalgia rather than arthralgia, and joint pain is not listed among the common symptoms or complications of influenza in clinical guidelines 2

Arboviral Infections

• Multiple severe arthralgia is a hallmark symptom of arboviral infections, particularly chikungunya, which presents with systemic febrile illness and polyarthralgia/arthritis 1
• The American Heart Association notes that migratory polyarthritis is characteristic of certain conditions but not typical influenza 3

Clinical Implications

• When evaluating a patient with multiple severe arthralgia during flu season, consider alternative diagnoses such as arboviral infections, particularly if in an endemic area 1
• For patients with travel history to tropical regions presenting with severe arthralgia, dengue and chikungunya should be high on the differential diagnosis 1

Diagnostic Considerations

• Careful history taking should include recent travel to endemic areas for arboviral diseases 1
• Evaluate for other characteristic symptoms of specific viral infections, such as rash in chikungunya, respiratory symptoms in influenza 1, 2
• Consider serological testing for specific viral etiologies based on clinical presentation and epidemiological factors 1