Causes and Risk Factors
Vein valves fail for a combination of reasons:- Heredity: A family history of varicose veins is one of the strongest predictors.
- Age and hormones: Valves and vein walls weaken over time, and pregnancy raises both blood volume and pressure on pelvic veins.
- Prolonged standing or sitting: Occupations that keep you on your feet let gravity work against the veins all day.
- Excess weight: Increases pressure in the leg veins.
- Prior blood clots: A previous deep vein thrombosis can permanently damage vein valves, a cause known as post-thrombotic syndrome.
- Leg injury or surgery: Trauma and some orthopedic procedures damage veins directly or limit the calf-muscle pumping that normally pushes blood back toward the heart.
Symptoms
Beyond their appearance, diseased veins cause a characteristic set of complaints that typically worsen through the day and improve with leg elevation:- Aching, heaviness, or throbbing: Especially after long periods of standing.
- Swelling: Around the ankles and lower legs, usually worse by evening.
- Itching, cramping, and restless legs: Common and often underappreciated symptoms.
- Spider veins: Fine red or blue web-like clusters just under the skin surface often accompany larger varicosities. On their own they are a cosmetic concern rather than a medical one.
- Skin changes: With advanced venous insufficiency, the skin near the ankles can darken, thicken, and become fragile, eventually breaking down into slow-healing venous ulcers.
Diagnosis
Diagnosis begins with an examination of the legs while standing. The key test is a venous duplex ultrasound, a painless scan that maps blood flow and shows exactly which valves are leaking and whether a clot is present. Your physician will also check the arterial circulation — including for peripheral arterial disease — because compression therapy must be used cautiously when arteries are also narrowed. Where there is any doubt, an ankle-brachial index — a painless comparison of the blood pressure at the ankle with the blood pressure in the arm — confirms that the arterial supply can tolerate compression. A helpful overview is available from Johns Hopkins Medicine.Treatment
Treatment progresses from conservative measures to office-based procedures:- Compression stockings: The foundation of care — graduated compression counteracts pooling and relieves aching and swelling.
- Lifestyle measures: Elevating the legs, walking regularly, maintaining a healthy weight, and avoiding long uninterrupted periods of standing or sitting.
- Endovenous ablation: A thin catheter uses heat to seal the leaky vein from the inside, done in the office with local anesthesia.
- Sclerotherapy and phlebectomy: Injections that close smaller veins, and removal of surface varicosities through tiny incisions.
Complications
Untreated venous insufficiency tends to progress slowly, and a few complications are worth recognizing early:- Stasis dermatitis: Itchy, scaly, reddish-brown skin at the ankles caused by chronic fluid leakage into the tissues. It is often mistaken for other forms of dermatitis and responds to moisturizers, topical steroids, and consistent compression.
- Superficial thrombophlebitis: A tender, firm, reddened cord along a surface vein from clotting and inflammation. It is usually managed with compression and anti-inflammatory medication, but it should be examined to confirm the clot has not extended into the deep veins.
- Bleeding: A thin-walled varicose vein sitting close to the skin can bleed briskly after a minor bump. Lying down, elevating the leg, and applying firm direct pressure will control it.
- Ulceration: Open sores just above the inner ankle that heal slowly and tend to return unless compression is continued long term.
When to Seek Immediate Care
Seek prompt medical attention for sudden swelling or pain in one leg (a possible blood clot), bleeding from a varicose vein, or a leg sore that is not healing. Leg swelling and aching are easy to dismiss, but effective treatment can dramatically improve comfort and prevent skin breakdown. The internal-medicine team at Zimmer Medical Group evaluates leg vein symptoms, orders ultrasound when needed, and refers to vein specialists for procedures.Getting Results From Varicose Vein Treatment
Most people with varicose veins are told to wear compression and come back if it gets worse, and most stop wearing it within a month. What follows is how to make compression work, when a procedure is worth it, and which complications should not be waited out.
Compression that actually gets worn
Knee-high graduated stockings do nearly all the work, and thigh-high versions are seldom needed. They go on first thing in the morning before swelling builds, come off at night, and lose their pressure after about six months of daily wear. Rubber gloves or a donning aid solve the struggle to pull them on, and a lighter class worn daily beats a heavier one left in the drawer. In Florida heat, a sheer or open-toe style is easier to tolerate. Before compression is prescribed, an ankle-brachial index rules out peripheral arterial disease, since squeezing a leg with poor arterial flow can harm it.
When ablation is the better answer
Persistent aching, swelling, skin changes, a healed or open ulcer, or bleeding from a vein are medical reasons for a procedure, and insurers usually cover endovenous ablation when a trial of compression has failed and ultrasound shows reflux in the main surface vein. Ablation is an office procedure with same-day walking, and recurrence is lower than with the older stripping operation. Spider veins alone are cosmetic. Our chronic venous insufficiency article covers what the ultrasound report means.
Skin changes are the warning sign
Brown staining, itch, and eczema-like dermatitis around the inner ankle mean the pressure is damaging the skin, and an ulcer often follows if nothing changes. A short course of a topical steroid such as hydrocortisone calms the inflammation, but only consistent compression prevents progression to venous ulcer disease. Long-standing venous swelling can also overload the lymphatics and produce lymphedema, which needs a different garment and therapy.
Sitting, standing, walking, and weight
The calf muscle is the pump that empties leg veins, so a short walk every hour matters more than total exercise time, and ankle pumps at a desk or on a plane help. Elevating the legs above heart level for twenty minutes in the evening reduces overnight swelling, and weight loss in people with obesity lowers venous pressure directly. Our blood clots and travel guide covers the long-drive season, and the walking challenge is a place to start.
The complications that need a same-day call
A tender, hard, red cord along a vein is superficial thrombophlebitis and needs an ultrasound to confirm the clot has not reached the deep veins; one near the groin is treated like a deep vein thrombosis. Sudden swelling of a whole leg, calf pain, or breathlessness are emergencies. Night cramps and restless legs often improve once the veins are treated. Our cardiovascular team arranges ultrasound and referral. NHLBI and MedlinePlus publish patient guidance on varicose veins and venous insufficiency.
If your ankles are swollen by evening or the skin above them has darkened, schedule a visit; the ultrasound is painless.