[Possible causes] Temporal arteritis, mass in brain Temporal arteritis is an inflammation of vessels close to the temples in older people, which decreases blood flow to the brain and causes pain. May also have tenderness in temples and/or jaw claudication. Some brain cancers are more common in older people. [Diagnostic tests] Erythrocyte sedimentation rate (diagnostic test for temporal arteritis), neuroimaging [Red Flag] 
New headache after age 50