Home remedies for edema and lymphadenopathy include elevating affected limbs, staying hydrated with plenty of water, consuming diuretic herbs like dandelion or parsley, applying cold compresses or ice packs, practicing gentle exercises like yoga or swimming, taking warm Epsom salt baths, and incorporating immune-boosting foods like citrus fruits, berries, and omega-3 rich fatty fish to help reduce swelling and promote lymphatic drainage.