Differentiating Temporal arteritis from other diseases

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Hamid Qazi, MD, BSc [2]

Differentiating Temporal Arteritis from other Diseases

The following list is a differential diagnosis of disorders that temporal arteritis should be distinguished from.

• Cluster headache
• Migraine headache
• Multi-infarct dementia
• Persistent idiopathic facial pain
• Polyarteritis nodosa
• Postherpetic neuralgia
• Sinusitis
• Trigeminal neuralgia
• Stroke
• Wegener granulomatosis

Diseases			Clinical manifestations								Para-clinical findings									Gold standard	Additional findings
			Symptoms					Physical examination
											Lab Findings				Imaging				Histopathology
			Headache	Fever	Weight loss	Arthralgia	Claudication	Bruit	HTN	Focal neurological disorder	Biomarker	CBC	ESR	Other	CT scan	Angiography	Ultrasound/ Echocardiography	Other
	Giant cell arteritis		+	-	+	+/-	-	-	-	+/-	Pentraxin 3 (PTX3)	Normal	↑	↑CRP	Stenosis, Occlusion, Dilatation	Aneurysm	-	Mural inflammation in MRA	Granulomatous inflammation of arteries	Biopsy	Jaw pain and claudication
	Polymyalgia rheumatica (PMR)		+	-	+/-	+	-	-	-	-	Plasma fibrinogen	Normocytic, normochromic anemia	↑	CRP	Periodontoid localization of calcification	Vessel wall thickening, Increased mural contrast enhancement	Subacromial or subdeltoid bursitis	High F-FDG accumulation around the joints in FDG PET-CT	Small angular fibers, Pyknotic nuclear clumps, or target-targetoid fibers	-	Joint stiffness, Fatigue
	Granulomatosis with polyangiitis (Wegener’s)		+	+/-	+/-	-	-	-	-	+	Anti-PR3 antibody (C-ANCA) (90%), Anti-MPO antibody (P-ANCA) (10%)	Leukocytosis, Normochromic normocytic anemia	↑	↑Cr or BUN, Hypoalbuminemia	Consolidation, Patchy or diffuse ground-glass opacities	Occlusion or stenosis of LAD and RCA in coronary angiography	-	Single or multiple nodules and masses with cavitation in CXR	Parenchymal necrosis, Granulomatous inflammation	Histological confirmation	Conjunctivitis, Episcleritis, Uveitis, Optic nerve vasculitis
	Polyarteritis nodosa		+	+	+	+	+	+	+/-	+/-	LAMP-2 protein autoantibodies	Leukocytosis, Normochromic anemia, Thrombocytosis	↑	↑ Cr or BUN, ↑ ALT or AST, Proteinuria	Focal regions of infarction or hemorrhage	Multiple microaneurysms, Hemorrhage due to focal rupture, Occlusion	Aneurysms and renal arteriovenous fistula in color Doppler sonography	-	Necrotizing inflammatory lesions	Angiography	Sudden weight loss, Abdominal pain
	Takayasu arteritis		+	+/-	+	-	+	+	+/-	+/-	MMP-3 and MMP-9	Leukocytosis, Anemia	↑	↑CRP	Aneurysmal dilatation of the aorta	Blood vessel stenosis	Circumferential thickening of the arterial wall (Macaroni sign)	PET-scan, Cardiac CT	Granulomatous inflammation of arteries	Arteriography	Coronary aneurysm

References

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