Your headache symptoms can help your doctor determine the cause
and the appropriate treatment. Most headaches aren't the result of a
serious illness, but some may result from a life-threatening condition
requiring emergency care.
Headaches are generally classified by cause:
A primary headache is caused by problems with or overactivity of
pain-sensitive structures in your head. A primary headache isn't a
symptom of an underlying disease. Chemical activity in your brain,
the nerves or blood vessels of your head outside your skull, or
muscles of your head and neck — or some combination of these
factors — may play a role in primary headaches. Some people may
carry genes that make them more likely to develop such headaches.
A secondary headache is a symptom of a disease that can activate
the pain-sensitive nerves of the head. Any number of conditions —
varying greatly in severity...consult neurologist if symptoms persists long even after analgesics
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