A new, persistent headache after age 50—especially with scalp tenderness, pain while chewing or changes in vision—needs prompt medical assessment. These can be giant cell arteritis symptoms, also called temporal arteritis. The condition inflames arteries and can damage the blood supply to the eye. If you have sudden vision loss, blurred or double vision, or a brief episode of vision going dark, seek emergency care now; do not wait for a routine appointment.
Which Giant Cell Arteritis Symptoms Matter Most?
Giant cell arteritis (GCA) usually affects adults over 50 and is more common in people over 60. A typical headache is new and persistent, often around the temples, though it can occur elsewhere. The scalp may hurt when touched or when brushing your hair. A temple artery may feel tender or thickened, but you cannot rule GCA in or out by checking it yourself.
Jaw pain or fatigue that starts while chewing and eases when you stop—known as jaw claudication—is another warning sign. It can be confused with dental or jaw-joint problems, so describe when it happens and what brings relief. Some people also develop shoulder or hip stiffness associated with polymyalgia rheumatica, fatigue, fever, night sweats or weight loss. No single symptom proves GCA, and other conditions can cause similar complaints.
Visual symptoms are particularly urgent because GCA can interrupt blood flow to the eye and cause permanent sight loss. Do not wait to see whether they pass. A clinician needs to assess them promptly, even if other symptoms are mild or blood tests have not yet been done.
Why Normal Inflammatory Tests Do Not Always Rule It Out
Clinicians commonly check C-reactive protein (CRP), erythrocyte sedimentation rate (ESR) and a blood count that includes platelets. These tests look for signs of inflammation, but none confirms GCA on its own. Results must be considered alongside your symptoms, examination and further tests.
In a Mayo Clinic study, Tanaz Kermani and colleagues reviewed records of 764 people who had a temporal artery biopsy from 2000 to 2008. Among the 177 with a biopsy positive for GCA, seven—4%—had normal ESR and CRP at diagnosis. This was a group already referred for biopsy, not a general population sample, but it shows why normal results cannot completely exclude GCA when symptoms are concerning.
A separate study by Fiona Li Ying Chan and colleagues reviewed 270 biopsy-referred patients at South Australian teaching hospitals from 2011 to 2014. The researchers compared ESR, CRP and platelet results with clinicians’ diagnoses. They concluded that the tests had only moderate diagnostic performance and could differ from one patient to another. Taken together, these studies support using blood tests as part of an assessment—not as a stand-alone all-clear.
How Diagnosis And Follow-Up May Work
Assessment usually starts with your symptom history and examination, alongside blood tests. Depending on the clinical picture and local services, a specialist may arrange ultrasound of the temporal arteries, sometimes including arteries in the armpit area, or a temporal artery biopsy. Ultrasound looks for changes in the artery wall. A biopsy removes a small artery sample for examination. Because inflammation can affect the artery in patches, a negative biopsy does not always settle the question; clinicians interpret it with the other findings.
Pathways differ between health systems and can depend on local expertise and access to testing. For example, an NHS Highland interim guideline has used ultrasound first when available, with biopsy considered if ultrasound is unavailable or inconclusive. Elsewhere, biopsy remains an established diagnostic test. Ask the team caring for you which test they recommend and how quickly it can be arranged. Local guidance can change, so the treating service’s current pathway matters.
If GCA is strongly suspected, clinicians may start high-dose corticosteroid treatment before all investigations are complete. This is because delaying treatment while waiting for confirmation can put sight at risk. Testing should be arranged urgently, but treatment decisions belong to the clinical team assessing you. Follow-up with specialists helps them review symptoms, test results and the ongoing plan.
If you are over 50 and develop a new headache with scalp tenderness or jaw pain while chewing, contact a health professional urgently. Any new visual symptom warrants emergency assessment. Tell the clinician when symptoms began, whether they are changing, and whether you have had temporary as well as lasting vision changes. This guide cannot diagnose GCA; seek urgent clinical advice if you are concerned.
