Protein-losing nephropathy causes devastating protein loss through damaged kidney filters, leading to life-threatening complications unless the underlying cause is identified and treated aggressively.
Dogs with severe PLN face multiple simultaneous welfare threats: the edema that makes breathing and movement difficult, the thromboembolism risk that can cause sudden limb paralysis or death, and the progressive kidney failure. The complexity of managing PLN requires specialist involvement - internist or nephrologist consultation significantly improves welfare outcomes compared to general practice management alone. Early intervention before severe protein loss occurs provides the best welfare prognosis. Genetic screening for Wheaten Terriers has welfare implications for preventing heritable PLN.