Healthy leg veins contain valves that open and close to assist the return of blood back to the heart. Venous reflux disease develops when the valves that keep blood flowing out of the legs and back to the heart become damaged or diseased. This can cause blood to pool in your legs and lead to symptoms such as pain, swelling, swollen limbs, leg heaviness and fatigue, skin changes and skin ulcers, and varicose veins.
Varicose veins are ropy appearing blue vessels under the skin. They are most often branches from the saphenous trunk veins and have enlarged due to the excess pressure in the saphenous system. Varicose veins are unsightly and often painful. A clotted varicose vein causes the classic phlebitis, hot and red and painful skin at the site of the clot. Besides the visible symptoms, physical symptoms are tiredness, restless legs at night, heaviness in the leg, pain, aching, itching, throbbing, and swelling, burning or a cramping sensation.
Spider veins, medically known as telangiectasis. They are small, blue to red appearing blood vessels that lie close to the surface of the skin and occur either in lines or web-like patterns. They can ache, burn or itch now and then, but they are usually not symptomatic. Spider veins are not harmful and are simply unsightly.
Pelvic congestion syndrome — also called pelvic venous insufficiency — is a chronic pain condition associated with blood flow problems in your pelvic veins. “Chronic” means pain lasting longer than six months that isn’t associated with either your menstrual cycle or pregnancy.
Deep vein thrombosis (DVT, also called venous thrombosis) occurs when a thrombus (blood clot) develops in veins deep in your body because your veins are injured or the blood flowing through them is too sluggish. The blood clots may partially or completely block blood flow through your vein.
May-Thurner syndrome is when your right iliac artery presses on (compresses) your left iliac vein. Your right iliac artery is the main blood vessel that carries blood to your right leg. Your left iliac vein is the main blood vessel that carries blood from your left leg back to your heart.