Being over weight causes stress and pressure on the veins and is an underlying cause in many cases of stasis dermatitis. Other common causes of venous insufficiency (leading to stasis dermatitis) are previous cases of blood clots and varicose veins, hypertension, and genetics. Weakness of the leg muscles that help squeeze blood forward may also contribute to venous insufficiency.
Smoking is harmful on the circulation, so if you smoke, stopping will help.
It is important to protect your legs from injury (as they may not heal as quickly).
Compression stockings are usually recommended. There are brands now, usually available in drug stores and pharmacies that appear just like regular trouser socks (usually black in color though) but that go at least to the knees and provide compression and support for the veins of the lower legs.
Elevation of your legs when sitting may also be helpful, and it is best not to stand or sit in one place or position for very long; get up and move frequently.
Please reply if you have additional questions or need clarification so that I may address them until you are satisfied with your answer.