The aim of this study is to study the validity and reliability of the Modified Pain Neurophysiology Questionnaire in patients with neck pain. After the ethics committee approval, women and men in Turkey will be invited to the research via online advertisements (researchers' facebook, instagram, twitter accounts). The scale will be translated from English to Turkish by two people who are fluent in Turkish and English. A single Turkish translation will be obtained with a common opinion from these two Turkish translations. In ten trial phases, a preliminary assessment will be conducted with 15 participants to test the intelligibility of the scale. If there are participants who think that there is a problem with the intelligibility of the scale, they will be asked to explain which items they have problems understanding and why. After individuals are informed with the online voluntary consent form, participants will be asked to complete the Modified Pain Neurophysiology questionnaire. Modified Pain Neurophysiology scale questions and questions in the data collection form will be prepared through the google surveys application and will be sent to the participants via Whatsapp, Facebook, Instagram and e-mail. Participants will fill out the survey forms online. In order to evaluate the validity of the Modified Pain Neurophysiology questionnaire, the pain subscale of the SF-36 scale, which has been validated in Turkish, will be used (McHorney, Ware, Lu, and Sherbourne, 1994), (Kocyigit et al., 1999). Scales after 15 days to assess test-retest reliability will be repeated.

Inclusion Criteria:

• be between the ages of 18-65
• Having neck pain complaints for the last 3 months
• Adult individuals who agreed to participate in the study. Their mother tongue is Turkish.

Exclusion Criteria:

• Not answering all the questions

Persons who meet the inclusion criteria and who volunteered to participate in the study