This multi-center, nationwide study aims to evaluate the validity and reliability of the Turkish version of the Headache Screening Questionnaire (HSQ-TR). The 10-item questionnaire is designed to screen for migraine and tension-type headache in individuals with headache complaints.

Participants presenting with headache will be enrolled. Each participant will first complete the HSQ-TR and then be examined by a neurologist who will provide a diagnosis according to the ICHD-3 beta criteria. The questionnaire results will be compared with the neurologist's diagnoses to assess criterion validity, including sensitivity, specificity, and agreement.

Inclusion Criteria:

• Individuals aged 18 and over who present with headache complaints (migraine or tension-type) and voluntarily agree to participate

Exclusion Criteria:

• Individuals with severe psychiatric disorders, illiteracy in Turkish, or significant cognitive impairment preventing comprehension of the scale

Adult patients (≥18 years old) presenting with headache complaints (migraine or tension-type headache) at outpatient neurology clinics in participating hospitals. Participants must be literate in Turkish and cognitively capable of completing self-report questionnaires. A total of 100 patients will be enrolled across multiple centers in Turkey.