Can varicose veins cause long-term skin damage?
Yes, untreated varicose veins are a primary cause of progressive and often permanent skin damage in the lower legs. This occurs due to ‘chronic venous insufficiency’ (CVI), where malfunctioning valves allow blood to pool under high pressure. This pressure forces fluid, proteins, and red blood cells into the surrounding skin tissue, triggering a cascade of chronic inflammation. In the UK, vascular specialists use the CEAP classification to track this damage, which can range from mild discolouration to life-altering open sores.
What We will cover in this Article
- The progression from venous hypertension to skin breakdown
- Understanding ‘Venous Eczema’ and its symptoms
- The causes of permanent skin staining (‘Haemosiderin’)
- Lipodermatosclerosis: The hardening of leg tissues
- The development and risks of venous leg ulcers
- Comparative data on the stages of venous skin disease
- Triggers that accelerate skin damage and when to seek help
The CEAP Classification: Stages of Venous Skin Damage
The following table outlines the clinical progression of skin damage caused by underlying venous disease.
| CEAP Stage | Physical Sign | Condition of the Skin | Risk of Ulceration |
| C2 | Varicose Veins | Bulging veins; skin appears normal | Low |
| C3 | Oedema | Persistent swelling; skin feels tight | Moderate |
| C4a | Pigmentation / Eczema | Red, itchy, flaky, or brown-stained skin | High |
| C4b | Lipodermatosclerosis | Hard, thickened, ‘woody’ texture | Very High |
| C5 | Healed Ulcer | Scarred skin from a previous open sore | Extremely High |
| C6 | Active Ulcer | Open, weeping sore that fails to heal | Critical |
The early warning: Venous Eczema
One of the first signs of long-term skin damage is ‘venous eczema’ (also known as stasis dermatitis). As fluid leaks into the skin, the immune system reacts, causing the area to become red, extremely itchy, and flaky. Unlike standard eczema, this is not caused by an allergy but by poor circulation.
If left untreated, the skin can become ‘weepy’ and develop crusts. This damaged barrier is highly susceptible to bacterial infections like cellulitis, which can further scar the tissue and damage the lymphatic system.
Permanent staining: Haemosiderin deposits
When red blood cells leak out of high-pressure veins into the skin, they die and release iron. This iron deposits in the tissue, causing a permanent brownish or rust-coloured staining known as ‘haemosiderin staining’.
This discolouration usually starts around the inner ankle and slowly spreads. While treating the underlying varicose veins can stop the staining from worsening, the existing brown marks are often permanent because the iron is physically trapped in the skin layers.
Tissue hardening: Lipodermatosclerosis
As inflammation persists for years, the fat and connective tissue under the skin become scarred. This condition, called ‘lipodermatosclerosis’, causes the skin to feel hard, smooth, and fixed to the bone.
The lower part of the leg may shrink due to this internal scarring, while the upper calf remains swollen, giving the leg an ‘inverted champagne bottle’ appearance. At this stage, the skin is extremely fragile; even a minor bump can cause the skin to split and fail to heal.
The final stage: Venous Leg Ulcers
The most severe form of skin damage is the venous leg ulcer. Because the skin is poorly nourished and constantly inflamed, it loses its ability to repair itself. A small scratch can quickly turn into a large, shallow, and painful open sore. Data indicates that approximately $80\%$ of all leg ulcers in the UK are caused by underlying venous disease.
Triggers for accelerated skin damage
While the root cause is valve failure, certain daily triggers can cause the skin to deteriorate much faster:
- Static Standing: Increases the ‘hydrostatic pressure’ on the skin cells.
- Heat: Causes veins to dilate, allowing more fluid to leak into the tissue.
- Obesity: Adds significant pressure to the pelvic veins, slowing down leg drainage.
- Minor Trauma: Knocks or scratches that wouldn’t normally be a problem can trigger an ulcer in ‘venous’ skin.
Differentiation: Venous vs. Arterial Skin Problems
It is vital to differentiate between skin issues caused by veins and those caused by poor arterial supply, as the treatments are opposite.
| Feature | Venous Skin Problems | Arterial Skin Problems |
| Colour | Brown, dusky red, or purple | Pale, blue, or shiny/white |
| Temperature | Usually warm | Often cold to the touch |
| Pain | Aching, throbbing, heavy | Sharp, cramping (claudication) |
| Location | Usually around the inner ankle | Often on toes, heels, or bony points |
Conclusion
Untreated varicose veins are a direct threat to the long-term integrity of your skin. From initial itching and eczema to the severe complications of hardening and open ulcers, the damage is progressive. Early intervention with medical-grade compression or minimally invasive procedures like laser ablation can halt this progression and protect your skin from permanent discolouration and breakdown.
If you experience severe, sudden, or worsening symptoms, such as an open sore that is enlarging, a high fever with leg redness, or foul-smelling discharge from a wound, call 999 or contact your vascular specialist immediately.
‘Will the brown stains go away after surgery?’.
Usually, the stains remain permanent because they are iron deposits. However, surgery prevents them from spreading or getting darker.
‘Is venous eczema contagious?’
No. It is caused by internal pressure and fluid leakage, not by an external virus or bacteria.
‘How can I tell if my skin is hardening?’
If the skin above your ankle feels ‘woody’ or stiff and you cannot easily pinch the skin between your fingers, it may be lipodermatosclerosis.
‘Can moisturiser fix the itching?’
Moisturiser helps with the surface dryness, but it does not address the underlying pressure. You need to treat the veins or wear compression.
‘Why does the skin near my ankle look white and scarred?’
This is likely ‘atrophie blanche’, a sign of advanced venous disease where small areas of skin have lost their blood supply and turned into scar tissue.
‘Does everyone with varicose veins get ulcers?’
No. Only a percentage of people progress to Stage C6, but the risk increases the longer the veins are left untreated.
‘Are venous ulcers painful?’
Yes, they can be very painful, especially when standing, as the pressure in the leg increases.
Authority Snapshot
This article outlines the stages of dermatological complications related to venous disease, based on the CEAP classification and NICE clinical guidelines. It emphasizes the importance of early diagnosis to prevent irreversible skin changes. This information is intended to help patients recognize the warning signs of advanced venous insufficiency. Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.
