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Giant cell arteritis (GCA), also called temporal arteritis, is an inflammatory autoimmune disease of large blood vessels. [ 4 ] [ 7 ] Symptoms may include headache , pain over the temples, flu-like symptoms , double vision , and difficulty opening the mouth. [ 3 ]
Initial signs are highly variable, and diagnosis can be severely delayed due to the nonspecific nature of the symptoms. In general, irritation and nasal inflammation are the first signs in most people. [12] [13] Involvement of the upper respiratory tract, such as the nose and sinuses, is seen in nearly all people with GPA. [14]
The disease's symptoms can range from catastrophic neurological impairment to an asymptomatic condition brought on by impalpable pulses or bruits. [7] Non-specific features include mild anemia, myalgia, arthralgia, weight loss, malaise, night sweats, and fever. [8] Giant cell arteritis (GCA) is the most common type of systemic vasculitis in adults.
AAION is due to temporal arteritis (also called giant-cell arteritis), an inflammatory disease of medium-sized blood vessels (Chapel-Hill-Conference) that occurs especially with advancing age. In contrast, NAION results from the coincidence of cardiovascular risk factors in a patient with "crowded" optic discs.
Main symptoms Primary large vessel vasculitis [8] Takayasu arteritis: Diminished or absent pulses, vascular bruits, hypertension, Takayasu retinopathy, and aortic regurgitation. [9] Giant cell arteritis: Headache, scalp tenderness, jaw claudication, and blindness. [10] Primary medium vessel vasculitis [8] Polyarteritis nodosa
Sudden visual loss is the most common symptom in AAION, [1] and is most often accompanied by other symptoms of temporal arteritis: such as jaw claudication, scalp tenderness, unintentional weight loss, fatigue, myalgias and loss of appetite. [1] A related disease called polymyalgia rheumatica has a 15 percent incidence of giant cell arteritis.
Arteritis is a vascular disorder characterized by inflammation of the walls of arteries, [1] usually as a result of infection or autoimmune responses. Arteritis, a complex disorder, is still not entirely understood. [2] Arteritis may be distinguished by its different types, based on the organ systems affected by the disease. [2]
A giant cell (also known as a multinucleated giant cell, or multinucleate giant cell) is a mass formed by the union of several distinct cells (usually histiocytes), often forming a granuloma. [ 1 ] Although there is typically a focus on the pathological aspects of multinucleate giant cells (MGCs), they also play many important physiological roles.