Are Varicose Veins Dangerous? Understanding Potential Complications

For most people, varicose veins are not dangerous or life-threatening. They are a common medical condition caused by faulty vein valves, resulting in increased pressure within the superficial veins of the legs. However, varicose veins are more than just a cosmetic concern. In some people, they can cause persistent symptoms and, if left untreated, may lead to complications associated with chronic venous disease.

Most Varicose Veins Are Not an Emergency

Many people live with varicose veins for years without developing serious complications. Some people experience only mild cosmetic concerns, while others have symptoms such as aching or throbbing, leg heaviness, ankle swelling, itching, and night cramps. These symptoms can usually be assessed and managed during a routine consultation with a vascular specialist.

Skin Changes

Long-standing venous hypertension may cause brown skin pigmentation around the ankles, venous eczema, thickened or hardened skin (lipodermatosclerosis), and white scar-like patches (atrophie blanche). These changes indicate more advanced venous disease and increase the risk of ulceration.

Venous Leg Ulcers

Persistent venous hypertension may eventually lead to a venous leg ulcer, most commonly around the inside of the ankle. Venous ulcers are often slow to heal and can significantly affect mobility and quality of life. Early recognition and treatment of venous reflux can help reduce the risk of ulcer development and recurrence.

Superficial Vein Thrombosis

Varicose veins increase the risk of superficial vein thrombosis (SVT), previously known as superficial thrombophlebitis. This usually presents as a painful, red, tender, cord-like vein. Although SVT is generally less serious than a deep vein thrombosis (DVT), it sometimes requires ultrasound assessment and medical treatment, particularly if it is close to the deep venous system.

Bleeding

Because varicose veins lie close to the skin surface, they may occasionally bleed after even minor trauma. Although the bleeding often looks dramatic, it can usually be controlled by lying down, elevating the affected leg, and applying firm, direct pressure to the bleeding site. Anyone who experiences bleeding from a varicose vein should seek prompt medical assessment, as definitive treatment is usually recommended to prevent further episodes.

Can Varicose Veins Cause DVT?

Most people with varicose veins do not develop a deep vein thrombosis (DVT). While varicose veins are associated with a modest increase in the risk of venous thrombosis, the absolute risk remains low for most patients. Sudden swelling of the entire leg, severe calf pain or shortness of breath should never be assumed to be caused by varicose veins and require urgent medical assessment.

When Should I See a Vascular Specialist?

You should arrange a consultation if you have: persistent aching, heaviness or swelling; skin pigmentation or eczema; bleeding from a varicose vein; a painful, red or tender vein; a wound around the ankle that is slow to heal; or symptoms that affect your daily activities or quality of life.

A duplex ultrasound scan can determine whether significant venous reflux is present and whether treatment is likely to relieve symptoms or reduce the risk of future complications.

Should Everyone Have Treatment?

No. Not everyone with varicose veins requires treatment. Some people have mild, asymptomatic veins that can be safely observed. Treatment is generally recommended when varicose veins cause troublesome symptoms, affect quality of life, lead to complications such as bleeding or superficial vein thrombosis, or are associated with skin changes or venous leg ulcers.

The decision to proceed with treatment should always be based on a combination of your symptoms, duplex ultrasound findings, overall health and personal preferences.

What If My Veins Don't Hurt?

Not all varicose veins require treatment. If your veins are purely cosmetic and are not causing symptoms or complications, treatment is usually optional. However, if you are unsure whether your veins are associated with underlying venous disease, a consultation and duplex ultrasound scan can provide reassurance and help you make an informed decision.