case_images: PMC9978861_01
case_images: Palpable purpuric lesions on the legs
case_images: cureus-0015-00000034422-i01.jpg
case_images: PMC9978861_01_cureus-0015-00000034422-i01.jpg
case_images: FIG1
case_images: Palpable purpuric lesions on the arms
case_images: cureus-0015-00000034422-i02.jpg
case_images: PMC9978861_01_cureus-0015-00000034422-i02.jpg
case_images: FIG2
case_images: Glomerular IgA staining by immunofluorescence microscopy
case_images: cureus-0015-00000034422-i03.jpg
case_images: PMC9978861_01_cureus-0015-00000034422-i03.jpg
case_images: FIG3
case_images: The exams showed subnephrotic proteinuria on a 24h collection (2252mg/dL) and worsening of kidney function with SCr that rose to 1.19mg/dL with an eGFR of 49mL/min/1.73m2. The next step was a kidney biopsy which showed the presence of IgA deposits in immunofluorescence staining, compatible with IgA nephropathy (Figure 3).