Distance Direction; USA - California - San Francisco: Tue 4:09 am---USA - California - Daly City: Tue 4:09 am: 9 km: 6 miles: 5 nm: SSW: USA - California - Oakland: Tue 4:09 am: 13 km: 8 miles: 7 nm: ENE: USA - California - Berkeley: Tue 4:09 am: 16 km: 10 miles: 9 nm: NE: USA - California - San Rafael: Tue 4:09 am: 24 km: 15 miles: 13 nm: NNW: USA - California - Hayward: Tue 4:09 am: 32 km: 20 miles: 17 nm: ESE
Headaches in the back of the head may be caused by a variety of ailments and injuries. Chronic headaches in the back of the head -- also known as occipital headaches -- are often variants of tension-type headaches or migraines. New-onset occipital headaches are a more urgent concern. Possible causes include blood vessel abnormalities, nerve disorders and serious traumatic injuries.
By Mayo Clinic Staff. Print. Cluster headaches, which occur in cyclical patterns or clusters, are one of the most painful types of headache. A cluster headache commonly awakens you in the middle of the night with intense pain in or around one eye on one side of your head. Bouts of frequent attacks, known as cluster periods, can last from weeks to months, usually followed by remission periods when the headaches stop. During remission, no headaches occur for months and sometimes even years. Fortunately, cluster headache is rare and not life-threatening. Treatments can make cluster headache attacks shorter and less severe. In addition, medications can reduce the number of cluster headaches.