Based on the research, hair loss in IgA Nephropathy can occur due to several factors:

Nutrient deficiencies: Your kidneys may not process vitamins and minerals properly, particularly vitamin D and riboflavin.

Protein imbalance: IgAN patients often need to limit protein intake, but too little protein can cause hair loss.

Treatment side effects: Some medications used to treat IgAN may contribute to hair loss.

Build-up of waste products: When kidneys aren't filtering properly, waste buildup can cause itching that leads to hair loss.

Talk to your doctor about testing for nutrient deficiencies and reviewing your medication and protein intake. They can help develop a safe plan to address hair loss while managing your IgAN.