Regular “clusters” (violent headache attacks occuring in series) can go on for minutes to hours, even over days to weeks. They usually occur at exactly the same time, e.g. at noon or shortly after falling asleep.
Cervical headaches frequently arise along with neck discomfort. In the case of such complaints a precise clarification of the cause of the symptoms by a neurologist or a rheumatologist is absolutely necessary. Cranio sacral therapy and manual therapy are very effective treatments for cervical headaches. These therapies can also relieve migraine.