Do you ever get achy, restless feelings in your feet and legs that get worse when you lay down? The answer might be that you suffer from venous insufficiency. Venous insufficiency is the malfunction or failure of the venous walls that causes abnormal blood flow. Venous insufficiency can also occur when the venous valves in systemic circulation are damaged or malfunction. This type of insufficiency is referred to as “idiopathic,” which means it can occur suddenly or have an unknown cause. Here’s more information regarding damaged veins, its symptoms, and causes.