Summary of the giant cell arteritis (GCA) mimickers [6]
| Conditions | Differential diagnosis |
|---|---|
| Takayasu arteritis | Age < 50, renal artery stenosis is common, and anterior ischemic optic neuropathic or polimyalgia reumatica is unusual. |
| Small and medium vessels arteritis | Different vascular distribution than GCA, other organ involvement, distinctive histopathology |
| Primary angiitis of the central nervous system | Inflammatory involvement of the intracranial vessels and stroke are more common than in GCA. |
| Idiopathic aortitis | Similar to hystopatology, the absence of the clinical expression of GCA |
| VEXAS syndrome | Neutrophilic dermatosis, hematologic abnormalities, characteristic vacuoles in myeloid precursor cells, UBA1 mutations |
| Nonarteritic anterior ischemic optic neuropathy | Clinical features and lab markers of GCA are generally absent. |
| Infection | Distinctive lab markers |
