Possible headache cause #2: Giant cell arteritis  Headache
Causes: Page 2  By , Caring.com senior editor 95% helpful  Why:
Giant cell arteritis (GCA) is an inflammatory disease of blood
vessels that usually strikes older adults. The vessels most
affected are in the scalp and head, which helps explain the
presence of headaches.  What to notice: A new, persistent,
throbbing headache in someone 60 to 65 is the typical first
symptom. For many people, the pain is centered at the temples or
near the eyes. It's usually accompanied by flu-like symptoms or
weight loss. The person may also experience loss of energy,
sweating, jaw pain and weakness, blurred vision, and enlarged
lymph nodes.  Women are more often affected than men, according
to the American College of Rheumatology. Seeing a doctor is
important because when the condition goes untreated, the person
with it is at increased risk for vision loss and small strokes.