SNOT-22 score patterns strongly negatively predict chronic rhinosinusitis in patients with headache

Area of Science:

• Otorhinolaryngology
• Headache Medicine

Background:

• Differentiating non-sinogenic headache from chronic rhinosinusitis (CRS) presents a clinical challenge due to overlapping symptoms.
• The 22-item Sino-Nasal Outcome Test (SNOT-22) is often used, but its score patterns require further investigation for differential diagnosis.

Purpose of the Study:

• To evaluate SNOT-22 score patterns in patients with non-sinogenic headache.
• To identify negative predictors for CRS in patients presenting with headache symptoms.

Main Methods:

• Retrospective review of patients diagnosed with CRS or non-sinogenic headache.
• Utilized receiver operating characteristic (ROC) curves to determine optimal SNOT-22 score cutoffs for predicting non-sinogenic headache.
• Calculated negative predictive values (NPVs) for CRS in both discovery and validation cohorts.

Main Results:

• Patients with non-sinogenic headache showed significantly higher SNOT-22 scores in the Ear/facial and Psychological dysfunction domains compared to CRS patients.
• The Ear/facial to Rhinologic domain ratio emerged as a key predictor, with an optimal cutoff > 0.66.
• This ratio demonstrated high NPVs (0.880 in discovery, 0.889 in validation) for ruling out CRS.

Conclusions:

• Distinct SNOT-22 score patterns differentiate non-sinogenic headache from CRS.
• An Ear/facial to Rhinologic domain ratio > 0.66 is a robust negative predictor for CRS.
• This finding can assist in clinical decision-making and reduce unnecessary sinonasal treatments.