First of all, in the measurement of the frequency of headaches, the standard 11-point Numeric Rating Scale (NRS), whose reliability is proven, and 100-mm visual analog scale (VAS) will be used. For NRS, patients will be asked to score their pain on a scale ranging from 0 to 10, scoring 0 (zero) in the absence of pain, and 10 in the case of most severe pain; whereas, for VAS, they will be asked to score their pain on a scale ranging from 0 to 100, scoring 0 in the absence of pain, and 100 in the case of most severe pain. Verbal rating scale (VRS) with 4 standard points will be used as another measurement tool. In this measurement, patients will be asked to express their pain as severe, moderate, mild and no pain.