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Related Concept Videos

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

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Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
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Related Experiment Video

Updated: Mar 21, 2026

Dural Stimulation and Periorbital von Frey Testing in Mice As a Preclinical Model of Headache
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Systemic Inflammation Markers in Migraine: A Cross-Sectional Study.

Marina Romozzi1,2, Federico Tosto3, Annalisa Gentile1

  • 1Dipartimento Universitario di Neuroscienze, Università Cattolica del Sacro Cuore, Rome, Italy.

European Journal of Neurology
|March 20, 2026
PubMed
Summary
This summary is machine-generated.

Systemic immune dysregulation is linked to migraine, especially chronic migraine (CM). Increased systemic immune-inflammation index (SII) and altered neutrophil and lymphocyte percentages in blood may indicate peripheral markers of this condition.

Keywords:
blood countinflammationmigrainepathogenesissystemic immunoinflammatory index

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Area of Science:

  • Neuroscience
  • Immunology
  • Hematology

Background:

  • Neuroinflammation and systemic immune mechanisms are implicated in migraine pathophysiology.
  • Peripheral markers of inflammation in migraine patients are underexplored.
  • Complete blood count (CBC) parameters offer potential insights into systemic immune alterations.

Purpose of the Study:

  • To evaluate systemic immune alterations in migraine patients using CBC parameters and derived inflammatory indices.
  • To compare these markers between migraine patients (episodic and chronic) and healthy controls (HCs).

Main Methods:

  • Cross-sectional analysis of peripheral blood samples.
  • Assessment of leukocyte subtypes, hemoglobin, and platelet levels.
  • Calculation of neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and systemic immune-inflammation index (SII).

Main Results:

  • The systemic immune-inflammation index (SII) was significantly higher in chronic migraine (CM) patients compared to both healthy controls (HCs) and episodic migraine (EM) patients.
  • Neutrophil percentage was significantly elevated in CM patients versus HCs and EM patients.
  • Lymphocyte percentage was significantly lower in CM patients compared to HCs.

Conclusions:

  • Systemic immune dysregulation is associated with migraine, particularly CM.
  • Elevated SII and altered neutrophil/lymphocyte distributions may serve as peripheral correlates of central neuroinflammation in migraine.
  • Routine blood markers could potentially identify inflammatory endophenotypes in migraine, requiring further validation.