Day to Day Variation of Pressure Pain Threshold and Muscle Hardness

The aim is to establish how headache and migraine can affect muscle hardness and tenderness in migraine patients

Migraine is a very common disorder, and many migraine patients have symptoms from their neck and muscles. 50% of migraine patients have a sensation of stiff neck in relation to migraine attacks. Furthermore it is well established, that migraine patients have tender muscles during migraine attack, which can be measured with pressure pain threshold. In this study the investigators aim to establish the variation in ultrasound elastography and pressure pain threshold in migraine patients over time. And establish the significance of headache, migraine and prodromes on these measurements. The study includes daily measurements of muscle hardness and muscle tenderness. The patients are asked to fulfill a headache diary and a short questionnaire asking about current headache, physical activity, stress and current infectious diseases. Sleep and physical activity is also measured objectively using a fitbit Charge2. Furthermore the patients are asked about symptoms which often are associated with migraine (prodromes).