IgA nephropathy is the most common type of primary glomerular disease, caused by the deposition of IgA-dominant immunoglobulins in the glomerular mesangial area. It has a short latency period, with symptoms appearing early. Clinical manifestations of IgA nephropathy are diverse, with approximately 40%-50% of patients experiencing macroscopic hematuria hours to two days after precursor symptoms such as upper respiratory tract infections, and some patients also suffer from severe back pain and abdominal pain. About 30%-40% of patients only present with asymptomatic hematuria or proteinuria. Approximately 5%-20% of patients exhibit severe edema and substantial proteinuria, showing symptoms of nephrotic syndrome. At the onset of the disease, about 10% of patients also have hypertension. As the disease progresses, those with hypertension can exceed 40%. Less than 10% of patients may experience acute renal failure.