[Large vessel vasculitis : Giant cell arteritis and Takayasu arteritis]

Area of Science:

• Rheumatology
• Internal Medicine
• Immunology

Background:

• Large vessel vasculitides include giant cell arteritis (GCA) and Takayasu arteritis (TAK).
• Both GCA and TAK are characterized by systemic inflammation without autoantibodies.
• GCA is closely associated with polymyalgia rheumatica (PMR).

Purpose of the Study:

• To differentiate between GCA and TAK based on their distinct clinical presentations.
• To highlight the urgency of GCA diagnosis and treatment due to blindness risk.
• To underscore the diagnostic challenges in Takayasu arteritis.

Main Methods:

• Clinical presentation analysis of GCA and TAK.
• Review of diagnostic criteria and symptoms.
• Comparison of disease onset and progression.

Main Results:

• GCA presents with sudden onset, severe systemic symptoms, and temporal headache.
• TAK typically begins in adolescence with less pronounced general symptoms.
• TAK is often diagnosed late, commonly due to exercise-induced claudication.

Conclusions:

• GCA requires immediate diagnostic work-up and treatment to prevent vision loss.
• TAK diagnosis is often delayed due to subtle initial symptoms.
• Understanding these differences is key for timely and appropriate patient management.