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The Daily Insight

What causes giant cell arteritis

Author

Isabella Wilson

Published Apr 19, 2026

GCA isn’t curable, but long-term treatment with steroid medications can put you into remission. If this treatment doesn’t work, or it causes side effects that you can’t tolerate, your doctor might also give you methotrexate or Actemra.

Can you recover from giant cell arteritis?

GCA isn’t curable, but long-term treatment with steroid medications can put you into remission. If this treatment doesn’t work, or it causes side effects that you can’t tolerate, your doctor might also give you methotrexate or Actemra.

Why do you get GCA?

We don’t yet know fully why people develop GCA. It’s an autoimmune condition. This is when your immune system, which is your body’s defence system that fights infections, gets confused and attacks healthy tissues in the body. In people who have GCA, the immune system mistakenly attacks healthy arteries.

How do you get GCA?

Causes. The cause of GCA is uncertain but it is believed to be an autoimmune disease in which the body’s own immune system attacks the blood vessels, including the temporal arteries, which supply blood to the head and the brain. Genetic and environmental factors (such as infections) are thought to play important roles.

What is the difference between temporal arteritis and giant cell arteritis?

Giant cell arteritis is an inflammation of the lining of your arteries. Most often, it affects the arteries in your head, especially those in your temples. For this reason, giant cell arteritis is sometimes called temporal arteritis.

Can giant cell arteritis cause dementia?

Dementia occurs infrequently in patients with giant cell (temporal) arteritis (GCA). Three elderly women with biopsy-proven GCA showed abrupt cognitive decline during periods of clinically active GCA, 1 to 6 months after diagnostic temporal artery biopsy, during periods of corticosteroid taper.

Will giant cell arteritis shorten my life?

Our results indicate that a diagnosis of GCA is significantly associated with reduced 5-year survival. The survival rates for cases and controls converge at 11.12 years, suggesting that the adverse affect on survival is present only in the years immediately following diagnosis.

Does stress cause temporal arteritis?

Conclusion: This result suggests the influence of stressful events in the clinical emergence of temporal arteritis and/or polymyalgia rheumatica.

What foods should I avoid with giant cell arteritis?

  • sweets.
  • fried foods.
  • processed foods.
What is the most feared complication of giant cell arteritis?

Visual loss. Acute visual loss in one or both eyes is by far the most feared and irreversible complication of giant cell arteritis.

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Can giant cell arteritis cause stroke?

GCA increases your risk of an ischemic stroke, although this complication is rare. An ischemic stroke happens when a clot blocks the flow of blood to the brain. A stroke is life-threatening and needs prompt treatment in a hospital, preferably one with a stroke center.

Is giant cell arteritis fatal?

Giant cell arteritis, also referred to as temporal arteritis, is a form of vasculitis which predominantly affects older people. It must be treated urgently, as it is associated with a significant risk of permanent visual loss, stroke, aneurysm and possible death.

What does a GCA headache feel like?

The headache is usually throbbing and continuous. Other descriptions of the pain include dull, boring, and burning. Focal tenderness on direct palpation is typically present. The patient may note scalp tenderness with hair combing, or with wearing a hat or eyeglasses.

What is the prognosis for giant cell arteritis?

When giant cell arteritis is diagnosed and treated early, the prognosis is usually excellent. Your symptoms will likely improve quickly after beginning corticosteroid treatment, and your vision isn’t likely to be affected.

What is the main differential feature between Takayasu's arteritis and giant cell arteritis?

The key difference between Takayasu arteritis (TAK) and giant cell arteritis (GCA) is the age of the patients affected by the disorders. Takayasu arteritis affects younger patients, generally less than 40 years of age, while giant cell arteritis affects older patients, generally over 50 years of age.

Is arteritis an autoimmune disease?

Giant cell arteritis is thought to be an autoimmune disorder, where the body’s defense system used against invading organisms is used instead to attack normal healthy tissues. These immune cells come together at the site where they are attacking the body and form giant cells.

How long do you take prednisone for giant cell arteritis?

Most patients with giant cell arteritis require at least two years of corticosteroid therapy. A few patients remain on a low dosage of corticosteroid indefinitely.

Can you drink alcohol with temporal arteritis?

Fortunately, a new medication called tocilizumab was approved by the Food and Drug Administration in 2017 to treat temporal arteritis. This medication is given as a subcutaneous injection. The patient should not smoke, and alcohol should be kept to a minimum.

How does temporal arteritis affect the eyes?

Visual loss occurs in about 25% of patients with temporal arteritis. The episodes of blurred or darkened vision can be brief and temporary, and usually affect one eye. In some cases visual loss can be quite sudden and severe.

Can temporal arteritis affect memory?

impairment of short-term memory, confusion, and delusional thinking, which showed marked improve- ment in response to steroid therapy. Therefore, giant cell arteritis should be considered in the differential diagnosis of elderly patients who present with short- term memory impairment.

Can you see temporal arteritis?

Giant Cell Arteritis (Temporal Arteritis) It usually happens to the large and medium-sized temporal arteries that run along both sides of your head. The cells of these inflamed arteries look giant under a microscope, which is how the condition got its name.

What is the first symptom most likely to be seen in vascular dementia?

Vascular dementia signs and symptoms include: Confusion. Trouble paying attention and concentrating. Reduced ability to organize thoughts or actions.

Can giant cell arteritis affect the legs?

Large artery involvement in GCA can affect the legs. Bilateral and rapidly progressive intermittent claudication of recent onset is the most common symptom, even in the absence of headaches or the presence of a silent inflammatory syndrome.

What mimics temporal arteritis?

Pain syndromes that may mimic temporal arteritis include tension-type headache, brain tumor, other forms of arteritis, trigeminal neuralgia involving the first division of the trigeminal nerve, demyelinating disease, migraine headache, cluster headache, migraine, and chronic paroxysmal hemicrania.

Can you get giant cell arteritis more than once?

Giant cell arteritis (GCA) is a chronic condition with frequent relapses. A better understanding of why relapses occur might help identify patients who would benefit from longer treatment duration.

What is the life expectancy of someone with Wegener's disease?

Results: Eighty-eight percent of patients survived the first year follow-up since the diagnosis, while 84% of patients remained alive after the second year of observation. Life expectancy was 67.1 +/- 4.4 months.

How does giant cell arteritis affect the eyes?

Narrowing of the arteries in GCA reduces blood flow to the eyes. A lack of blood damages the optic nerve and the other structures you need to see clearly. Depending on which part of your eye loses blood flow, you can have problems ranging from double vision to sight loss.

Can giant cell arteritis cause ear pain?

GCA patients may also suffer from ear pain and neck pain. Again they may share the symptoms of PMR with intermittent low-grade fever, weight loss, malaise, and joint/muscle pain.

Does giant cell arteritis affect the heart?

Patients with GCA seem to be at increased risk for cardiovascular events, with heightened rate of acute myocardial infarction, cerebral vascular attack, and peripheral vascular disease.

Can giant cell arteritis cause aneurysm?

Conclusions: Giant cell arteritis is associated with a markedly increased risk for the development of aortic aneurysm, which is often a late complication and may cause death.

Does giant cell arteritis affect kidneys?

Isolated giant cell arteritis of the kidney is a rare cause of renal failure.