Takayasu arteritis vs Giant cell arteritis
How to tell Takayasu arteritis and Giant cell arteritis apart when a board question makes them look alike.
Both are granulomatous large-vessel vasculitides; Takayasu is young pulseless aortic-branch disease, while giant cell arteritis is older cranial ischemic disease.
Side by side
Young patient, often a woman, with granulomatous large-vessel vasculitis of the aorta and major branches causing limb claudication, pulse deficits, bruits, or BP asymmetry.
Patient older than 50 with new headache, scalp tenderness, jaw claudication, visual symptoms, polymyalgia rheumatica symptoms, and high inflammatory markers.
Granulomatous inflammation scars large elastic arteries and narrows aortic branch vessels.
Granulomatous inflammation of cranial and large arteries can compromise ophthalmic circulation and cause irreversible vision loss.
Arm claudication, unequal arm pressures, diminished pulses, subclavian/aortic bruits, or renal artery stenosis in a young patient points Takayasu.
Temporal artery tenderness, jaw claudication, vision symptoms, elevated ESR/CRP, and age over 50 points giant cell arteritis.
The trap
Do not use “large vessel” alone; age and cranial versus limb-pulse symptoms separate them.
Watch it explained
The repair move
For large-vessel vasculitis, ask age first, then whether the clue is pulse loss or cranial ischemia.
Try a free question
CoreA 24-year-old woman has fatigue, arm claudication, asymmetric blood pressures, diminished radial pulses, and bruits over the subclavian arteries. Which diagnosis is most likely?
Show answer and explanation
Answer: A. Takayasu arteritis. Takayasu arteritis is granulomatous large-vessel vasculitis of the aorta and major branches, classically in younger women with pulse deficits or limb claudication.
Why the other choices are tempting
- B. Giant cell arteritis is large-vessel vasculitis in patients older than 50, often with cranial symptoms.
- C. PAN is medium-vessel vasculitis with renal artery and GI involvement, not aortic arch pulse deficits.
- D. Buerger disease is tobacco-linked distal extremity ischemia.
- E. Kawasaki disease is a pediatric vasculitis with mucocutaneous findings and coronary aneurysm risk.
Flashcards
Tap a card to flip it.
What is the fastest separator for Takayasu arteritis vs Giant cell arteritis?
Both are granulomatous large-vessel vasculitides; Takayasu is young pulseless aortic-branch disease, while giant cell arteritis is older cranial ischemic disease.
What clue should make you choose Takayasu arteritis?
Young patient, often a woman, with granulomatous large-vessel vasculitis of the aorta and major branches causing limb claudication, pulse deficits, bruits, or BP asymmetry.
Quick answers
What is the fastest way to tell Takayasu arteritis from Giant cell arteritis?
Both are granulomatous large-vessel vasculitides; Takayasu is young pulseless aortic-branch disease, while giant cell arteritis is older cranial ischemic disease.
What is the key clue for Takayasu arteritis?
Young patient, often a woman, with granulomatous large-vessel vasculitis of the aorta and major branches causing limb claudication, pulse deficits, bruits, or BP asymmetry.
What is the key clue for Giant cell arteritis?
Patient older than 50 with new headache, scalp tenderness, jaw claudication, visual symptoms, polymyalgia rheumatica symptoms, and high inflammatory markers.
What is the common trap with Takayasu arteritis vs Giant cell arteritis?
Do not use “large vessel” alone; age and cranial versus limb-pulse symptoms separate them.