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Related Experiment Video

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COVID-19 Vaccination Modifies COVID-19-Related Headache Phenotype: Evidence from Case-Control Study on 309

Henar Ruiz-Saez1, Ana Echavarría Íñiguez1, Yésica González Osorio2

  • 1Headache Unit, Department of Neurology, Hospital Clínico Universitario de Valladolid, Avenida Ramón y Cajal 3, 47003 Valladolid, Spain.

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COVID-19 vaccination may alter headache presentation and shorten its duration. This suggests vaccines offer benefits beyond acute infection, potentially reducing persistent post-COVID-19 headaches.

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COVID-19COVID-19 vaccinationheadachesecondary headache

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Area of Science:

  • Neurology
  • Immunology
  • Infectious Diseases

Background:

  • Headache is a common symptom in viral infections, including COVID-19.
  • COVID-19-associated headache is linked to immune response and better prognosis.
  • The impact of vaccination on COVID-19 headache phenotype and persistence is unclear.

Purpose of the Study:

  • To investigate if COVID-19 vaccination modifies the clinical characteristics of headaches associated with acute infection.
  • To determine if vaccination influences the likelihood of developing persistent headaches after COVID-19.

Main Methods:

  • A case-control study compared fully vaccinated individuals with unvaccinated controls.
  • Participants were matched for age, sex, and prior headache history.
  • Patients underwent physician evaluation, completed questionnaires, and were followed for at least three months.

Main Results:

  • Vaccinated patients experienced shorter headache duration (4 vs. 8 days).
  • Vaccinated individuals showed a higher frequency of holocranial headache, pressing quality, phonophobia, and cranial autonomic symptoms.
  • The study included 103 cases and 206 controls, with a median age of 42.

Conclusions:

  • Full vaccination appears to modify the phenotype of COVID-19-associated headaches.
  • Vaccination may lead to a shorter duration of headaches following acute COVID-19.
  • These findings suggest a potential additional benefit of COVID-19 vaccines in preventing persistent post-COVID-19 headache.