{Reference Type}: Case Reports {Title}: Concurrent Takayasu Arteritis and Vascular Ehlers-Danlos Syndrome: A Case Report. {Author}: Hashimoto K;Sakai R;Shibata A;Okada Y;Yoshinaga S;Kurasawa T;Kondo T;Amano K; {Journal}: Front Cardiovasc Med {Volume}: 9 {Issue}: 0 {Year}: 2022 {Factor}: 5.846 {DOI}: 10.3389/fcvm.2022.805505 {Abstract}: Takayasu arteritis (TAK) is a rare primary systemic inflammatory vasculopathy. It is classified as a large-vessel vasculitis and is known to cause inflammatory aneurysms and vascular stenosis. Vascular Ehlers-Danlos syndrome (vEDS) is an autosomal dominant condition known to cause multiple aneurysms and arterial dissection at a young age owing to a mutation in the gene for type III collagen, COL3A1. Here, we present a case of TAK associated with vEDS with the development of multi-organ infarction of the brain, kidney, and spleen owing to multiple arterial aneurysms and stenosis of the internal carotid artery. The patient was successfully treated using anti-inflammatory agents, glucocorticoids, and tocilizumab with the addition of interventional radiology. In our case, a high inflammatory response led to vasculitis being the main cause of the disease with concurrent vEDS. When patients develop multiple aneurysms, stenosis, and dissections leading to multiple organ infarctions, a systemic differential diagnosis to consider concurrent vasculitis syndrome and non-inflammatory vasculopathy, including hereditary disorders, is important even with time constraints.