The Central Sensitization Scale consists of two sections. Section A comprises 25 items that assess symptoms related to physical and emotional health commonly seen in disorders associated with central sensitization. Each item is scored on a 5-point Likert scale ranging from (0) "never" to (4) "always," with a total score of 100. Higher scores indicate a higher level of symptom presence. Section B includes 7 diagnoses assessed within the scope of central sensitization syndrome (tension-type headache or migraine, fibromyalgia, irritable bowel syndrome, restless legs syndrome, temporomandibular joint disorder, chronic fatigue syndrome, and multiple chemical sensitivities) and three additional diagnoses reported to be associated with central sensitization (depression, anxiety or panic attacks, and neck injury). Participants are asked the following question: "Have you been diagnosed by a doctor with any of the following conditions?" and the year of diagnosis is indicated.

The Pain Catastrophizing Scale is a scale used to assess the psychological aspects of pain-related symptoms in three dimensions: rumination, helplessness, and amplification. The scale includes 13 items related to specific emotions and thoughts defined as negative associations. Five of these items relate to rumination, six to helplessness, and two to amplification. Patients are asked how frequently they recall each thought in these items. Each item is scored between 0-4, and the total score is calculated between 0-52.

The Brief Pain Inventory is a short, easy-to-administer assessment method that can be used to evaluate pain. It consists of two sections: pain intensity and impairment caused by pain. It has 4 items related to pain intensity and 7 items related to impairment caused by pain. Each item is rated on a scale of 0 to 10. The total score for both sections is calculated by summing the scores given to each item and dividing the sum by the number of questions, and ranges from 0 to 10. Higher scores indicate more pain and greater impairment caused by pain.

Published by Krupp in 1989, the FSS consists of nine items. For each item, the patient is asked to choose a number between 1 and 7 indicating how much they agree with the statement; 1 means strongly disagree, and 7 means strongly agree. Generally, scores of 4 and above indicate severe fatigue.

A summary version of the Short Form-36 Health Questionnaire, the SF-12 can also be divided into physical and mental sections and consists of a total of 12 questions. The physical component of the scale is scored between 24 and 56 points, while the mental component is scored between 19 and 60 points. Higher scores on the scale indicate a higher quality of life.

The Hospital Anxiety and Depression Scale is a 14-item, two-factor scale that assesses patients' anxiety and depression levels. Seven of these items assess anxiety, and the other seven assess depression. Each item is scored on a four-point scale. The total score for anxiety and depression ranges from 0 to 21. Scores between 0 and 7 indicate a normal emotional state. Scores above 7 on either the anxiety or depression subscales have been reported to indicate the presence of anxiety and depressive disorders.

The Revised Fibromyalgia Impact Questionnaire is a questionnaire evaluating limitations and functional disability in patients with fibromyalgia. It consists of 21 questions divided into three sections: function, general, and symptoms. All questions are rated on a numerical scale from 0 to 10. A score of 70 or higher indicates severe disability in this patient group. Higher scores indicate greater fibromyalgia-related disability.