| http://www.w3.org/ns/prov#value | - lifeYou have speech, vision, or movement problems or loss of balance, especially if you have not had these symptoms with a migraine beforeYour headaches are more severe when lying downThe headache starts very suddenlyAlso, call your doctor if:Your headache patterns or pain changeTreatments that once worked are no longer helpfulYou have side effects from medication, including irregular heartbeat,
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