Beyond the Pulselessness: A Multifaceted Case of Takayasu Arteritis With Aneurysmal Complications and Extensive Upper Limb Vascular Occlusion in a 40-Year-Old Female.

Takayasu arteritis, a rare chronic large-vessel vasculitis primarily affecting the aorta and its major branches, poses significant diagnostic and therapeutic challenges due to its heterogeneous manifestations and potential for severe vascular complications. This case report details a 40-year-old female presenting with a 12-month history of right arm pain and restricted movement, ultimately diagnosed with Takayasu arteritis. The patient exhibited hallmark features, including a diminished right radial pulse, blood pressure asymmetry (150/92 mmHg left, 125/80 mmHg right), and mild right arm weakness (4/5 strength). Physical examination of the shoulders revealed limited active range of motion in the right shoulder, with abduction restricted to 90° and external rotation to 30°, likely due to ischemic changes, while the left shoulder showed full range of motion. Laboratory findings confirmed active inflammation, with C-reactive protein (CRP) at 18.4 mg/L and erythrocyte sedimentation rate (ESR) at 45 mm/h, alongside mild anemia (11.5 g/dL) and reactive thrombocytosis (360-410 × 10