Two other major contributors to venous insufficiency are venous reflux and venous obstruction. Regardless of the cause, chronic venous insufficiency and chronic venous hypertension may result in leg swelling, skin darkening or hyperpigmentation, skin thickening or lipodermatosclerosis (fat and skin scar development), and even sores or ulcers. Your doctor can do laboratory testing and vascular testing to determine what conditions you may have.
