Thanks Dawn for your query.
Bilateral swelling of knees and thighs for sometime warrants ruling out diseases of the heart, kidney
. You require tests like serum protein - total and differential, Urine R/M, S. Creatinine
. Also check your random blood sugar. If you dont have breathlessness, or high BP
and considering you of 30 yrs, heart problem may not be there. If you have been having too much of alcohol, you need to have liver function tests and ultrasonography
of abdomen. Take less salt and water. If the swelling is pitting, you may need diuretics like tab lasix 10mg daily for a short duration.