Edema detected.Any medicinal advice to Cure Edema???

Three months ago, I found some swelling appearing on my hands, feet and legs. Earlier, I thought that it might be due to some extra work I have done, but then after the swelling go on increasing.
I gone to a dermatologist and after checking and doing diagnosis he told that am suffering from Edema.
I am very much depressed and afraid of the disease. Please do suggest me the best way to Cure Edema.