See a nephrologist. Your edema is probably caused by kidney involvment. Diet or diruretics is not enough. Proteinuria is often the cause....your kidneys filtering protein out of your blood causing the edema. This is a potentially serious condition that is normally treated with an ace inhibitor like lisinopril.
While treatable it is nothing to delay treating as it indicates possible kidney damage.
Mixed connective tissue disease (systemic lupus, scleroderma, polymyositis), Raynauds phenomena, Hypertension, Barrett's syndrome.
Meds: prednisone (9mg & tapering), 150mg imuran, lisinopril 40mg, maxide 37.5/25mg, norvasc 5 mg, folic acid, potassium, aciphex 20mg, multi vitamins.
Maintain your optimism and you can beat the odds.
"Although the world is full of suffering, it is also full of the overcoming of it." Helen Keller