Lymphedema

An enlarged limb is not a diagnosis. The nurse practitioner first decides whether the swelling reflects lymphatic failure, abnormal venous or systemic fluid balance, or an acute process such as deep vein thrombosis, cellulitis, or malignant obstruction. Lymphedema develops when lymphatic clearance cannot match the interstitial fluid load. Protein-rich fluid persists in the tissue, provoking inflammation and progressive fibrosis; adipose deposition also increases over time. This is why elevation may help early disease but cannot reverse established tissue change, and why compression is usually a long-term strategy rather than a short course. A useful assessment sequence is to establish onset and relevant exposures, compare the limbs and inspect the skin, assess for infection, thrombosis, arterial disease, and malignancy, quantify the asymmetry, and then stage the condition. In Canada, referral to clinicians trained in lymphedema management and access to compression garments vary by province or territory. The lesson uses International Society of Lymphology terminology and Canadian antimicrobial examples.