Supplemental Material for: A case report outlining polyarteritis nodosa: a cutaneous conundrum in a haemodialysis patient

<p dir="ltr">Introduction: </p><p dir="ltr">Skin disorders are quite common with haemodialysis patients due to vascular, neurological, and immune-mediated risk factors intrinsically connected to chronic kidney disease and the dialysis process. </p><p dir="ltr">Case presentation: </p><p dir="ltr">We report a case of cutaneous polyarteritis nodosa in a middle-aged man with painful leg ulcerations. Initially suspected to be a life-threatening condition such as calciphylaxis or severe cellulitis, the diagnosis was confirmed through a skin biopsy. </p><p dir="ltr">Conclusion:</p><p dir="ltr">This case highlights the complexities of diagnosis and presents a concept map illustrating the relationships between chronic kidney disease, dialysis, and skin disorders.</p>