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Why capillaries break in legs?
The presence of visible, branching capillaries, medically known as telangiectasias, on the lower limbs is a phenomenon that affects a significant portion of the population, particularly women, and is often perceived as being purely a cosmetic concern.
In some cases, this perception is indeed accurate. However, in many other cases, these visible capillaries represent genuine warning signs related to the proper functioning of the vascular system, warning signs that deserve a dedicated diagnostic and treatment approach rather than being dismissed as a simple aesthetic issue.
Telangiectasias of the lower limbs can appear on virtually any area of the legs, sometimes with extensive, web-like branching patterns, but they are most frequently found in the following locations:
- Around the ankles
- The outer portion of the thigh
- The inner portion of the knee
Their diameter typically ranges from approximately 0.3 to 1.5 millimeters, and they can appear in a variety of colors, including red, blue, purple, or green.
Venous hypertension, meaning elevated pressure within the venous system, is one of the most common underlying mechanisms responsible for the development of telangiectasias. Often at the root of this problem are what are known as “reticular veins”, small underlying varicose veins that frequently serve as the source feeding these visible surface capillaries.
Causes
Telangiectasias can sometimes be the visible sign of a more extensive and deeper underlying vascular problem, one whose accurate diagnosis and appropriate treatment should be addressed before pursuing any purely cosmetic intervention.
The causes and risk factors that contribute to the development of broken capillaries are numerous, and among the most common are:
Sex
Broken capillaries are more common in women than in men, likely due to a combination of hormonal factors and other biological differences affecting venous tone.
Age
Visible varicose veins and broken capillaries become increasingly common between the ages of 50 and 60. As we age, the skin becomes progressively thinner, and capillaries gradually lose their natural elasticity. The valves located within the veins, whose job is to direct blood flow upward toward the heart while preventing backward flow due to gravity, weaken over time. The resulting consequence is that blood tends to pool and stagnate within the veins. This pooling increases pressure within both veins and capillaries, eventually causing them to rupture. These broken capillaries become considerably more visible as the overlying skin becomes thinner, a natural process that becomes more pronounced with advancing age.
Family History
Broken capillaries can have a hereditary component. Individuals whose parents suffer from capillary fragility are considerably more likely to develop this same condition themselves.
Pregnancy
During pregnancy, the total volume of blood circulating throughout the body increases significantly, which causes veins to dilate. Additionally, the enlarging uterus can compress the inferior vena cava, the large vein located on the right side of the body. This compression results in increased pressure within the veins of the legs, causing venous dilation. In some cases, the valves within the veins fail to function properly as a result of this increased pressure, causing blood to pool and ultimately leading to the development of varicose veins.
Hormonal Imbalances
Hormonal fluctuations represent another important factor capable of altering the structural resistance of veins and capillaries.
Elevated levels of estrogen and progesterone can cause dilation of both veins and capillaries. For this reason, pregnancy, birth control pills, and other forms of estrogen-based treatment can increase the risk of developing weakened capillaries in the legs.
Conversely, excessively low hormone levels can reduce the ability of veins to withstand normal pressure, in addition to increasing the risk of hypertension. This explains why broken capillaries are particularly common during menopause, a period characterized by significantly declining estrogen levels.
Chronic Venous Insufficiency
Veins are responsible for carrying blood from the legs back to the heart, working against the natural force of gravity. As mentioned above, the backward flow of blood due to gravity is normally prevented by small valves located within the veins.
When these valves fail to function correctly, blood accumulates within the veins and capillaries of the legs. The resulting increase in pressure gradually weakens these small blood vessels, eventually causing them to rupture. This condition is known as chronic venous insufficiency, and its main risk factors include:
- Advanced age
- Obesity
- A sedentary lifestyle (chronic venous insufficiency tends to worsen with prolonged periods spent either sitting or standing)
Lifestyle
The risk of developing varicose veins and related capillary problems is notably higher among individuals who lead a sedentary lifestyle, with minimal regular physical activity.
Occupation
Individuals who spend many hours standing, or who work near sources of heat, such as bakers, are particularly susceptible to developing these vascular problems.
Other Contributing Factors
Several additional factors have also been identified as potential contributors to the development of broken capillaries, including:
- Excessive exposure to certain environmental factors, such as prolonged sun exposure and generally high temperatures
- Leg injury or trauma
- Alcoholism
- Liver disorders
- The presence of cellulite, in which impaired drainage of blood from deeper skin layers back toward the surface creates compensatory circulatory pathways, which manifest visibly as capillaries
At the root of the problem with telangiectasias and small venous dilations (venulectasias) are often what are known as “reticular veins”, small varicose veins most frequently located along the inner and outer surfaces of the thigh and the back of the knee (the popliteal fossa).
Before proceeding with treatment of the visible venulectasias themselves, it is generally necessary to first address these underlying reticular veins.
It is important to always keep in mind that the visible presence of broken capillaries can actually represent Stage I of Chronic Venous Disease affecting the lower limbs, essentially the same underlying condition experienced by those who suffer from more advanced varicose veins or venous ulcers. As such, this condition will generally tend to worsen progressively over time if left unaddressed.
This means that it is not unusual to observe an increasing number of capillaries of varying sizes appearing on the legs over time, often accompanied by associated symptoms such as a persistent sensation of heaviness in the legs.
Symptoms
The clinical symptoms associated with telangiectasias can vary considerably and may include:
- The visible presence of red, blue, or purple veins on the lower limbs
- Leg pain or a burning sensation
- Itching affecting the legs
- Swelling of the legs and ankles
- A sensation of heaviness in the legs
- Changes in skin coloration
- Minor bleeding from superficial capillaries (broken capillaries)
Symptoms such as heaviness, swelling, or itching frequently tend to worsen toward the evening, or following a day spent predominantly standing. This detail is also clinically relevant, as it can provide useful diagnostic information regarding the underlying condition.
Diagnosis
A specialist evaluation is essential for establishing an accurate diagnosis. The medical specialists who typically manage this condition include angiologists and vascular surgeons.
The diagnostic process necessarily begins with a thorough medical history, during which the physician asks the patient a series of questions regarding their clinical history, the presence of relevant risk factors, family history of similar conditions, and other pertinent information.
The next step involves a physical examination, during which the physician examines the patient and visually assesses the extent and distribution of the visible capillaries.
From a diagnostic imaging perspective, duplex ultrasound (also known as color Doppler ultrasound) plays a particularly important role. This non-invasive examination allows for detailed evaluation of both the structure and functional performance of the veins in the lower limbs, helping to identify any underlying venous insufficiency that may be contributing to the visible capillary changes.
Remedies and Treatments
An accurate diagnosis represents an essential and unavoidable first step in any rational approach to treating broken capillaries. It is not uncommon, for example, to discover an underlying problem affecting deeper veins that must be addressed first in order to achieve genuine and lasting cosmetic improvement, sometimes requiring a procedure such as saphenectomy (surgical removal of the saphenous vein). Similarly, capillaries appearing in areas affected by cellulite are often related to impaired drainage within the venule-capillary system itself, rather than to reflux originating from a larger underlying vein.
The specific type of treatment recommended therefore varies depending on the individual patient, the severity of symptoms present, and most importantly, the specific underlying cause responsible for the visible capillary changes.
Sclerotherapy
Sclerotherapy involves injecting a solution, in either liquid or foam form, directly into the affected capillaries using very fine needles. This injection triggers a controlled inflammatory response that leads to closure (occlusion) of the treated capillary vessels, resulting in their gradual fading and eventual disappearance.
Multiple treatment sessions are generally required, typically spaced approximately four weeks apart. This interval between sessions is necessary to allow the body sufficient time to respond appropriately to the inflammatory stimulus and to restore proper venous drainage before proceeding with further treatment.
Sclerotherapy does not require anesthesia and is performed on an outpatient basis. Following treatment, patients are generally able to walk normally and return to their usual daily activities almost immediately. The application of a specific cream following treatment is generally recommended to help prevent the development of skin pigmentation changes at the treatment site.
Among the most common side effects associated with sclerotherapy are:
- Itching of the legs
- Swelling
- Temporary changes in skin coloration
An Important Note Regarding Sclerotherapy**
It is worth specifically noting that performing sclerotherapy in the presence of untreated underlying venous insufficiency can lead to unsatisfactory results for several important reasons:
Venous insufficiency causes elevated pressure within the superficial venous system, which represents the primary underlying cause of capillary formation in the first place. If this fundamental underlying condition is not properly corrected, even after successfully treating existing visible capillaries with sclerotherapy, the persistently elevated pressure will inevitably lead to the formation of new capillaries over time.
Additionally, the abnormal backward blood flow caused by venous insufficiency can interfere with the effectiveness of the sclerosing treatment itself, preventing proper, sustained contact between the injected medication and the vessel wall.
In order to achieve optimal and lasting results, it is essential to:
- First evaluate for the presence of underlying venous insufficiency through duplex ultrasound examination
- Treat any identified venous insufficiency first, before addressing the visible capillaries
- Only then proceed with sclerotherapy treatment of the remaining visible capillaries
This sequential treatment approach allows the underlying cause to be addressed first, followed by treatment of the visible symptom, which significantly reduces the risk of capillaries recurring after treatment.
Laser Therapy
This treatment approach uses a laser light source to seal off the affected capillaries, preventing blood from continuing to leak into the surrounding tissue. Laser therapy can also be used to narrow blood vessels, thereby helping to prevent future capillary rupture.
Generally, only a single treatment session is required, typically lasting approximately 15 to 20 minutes. In more severe or extensive cases, the treatment may occasionally need to be repeated for optimal results.
Two main methodological approaches are currently available:
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Transdermal application: The laser light is applied externally, through the skin, directly targeting and closing the underlying blood vessel.
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Endovenous application: The capillary is closed through direct contact with a thin optical fiber inserted directly into the vessel.
Prior to treatment, it is sometimes possible to cool the area to be treated in order to reduce the sensation of heat produced by the laser itself, helping to minimize any potential discomfort during the procedure.
Laser therapy does not require anesthesia and is performed on an outpatient basis. Following treatment, patients can walk normally and return to their usual activities right away. The application of a healing, moisturizing cream is generally recommended following treatment.
Possible side effects of laser therapy include:
- The formation of small bruises
- Redness
- Itching
- Swelling
Laser therapy is generally somewhat less effective than sclerotherapy when treating larger or deeper capillaries, though the two treatment approaches can often be effectively combined for optimal results.
Pharmacological Therapy
A potential alternative, or complement, to laser treatment is pharmacological therapy, which can include:
- Oral medications, such as Venoruton or Daflon
- Topical creams and ointments (discussed in more detail below)
Various herbal remedies are also commonly used to address broken capillaries, though their effectiveness is not always well established through rigorous scientific study. These include:
- Bilberry and horse chestnut extracts (believed to strengthen vein walls)
- Butcher’s broom (thought to have vasoconstrictive effects on the smooth muscle of the venous wall)
- Centella asiatica (also known as gotu kola)
- Witch hazel
- Red vine leaf extract
Creams for Broken Capillaries
Creams and ointments designed to treat telangiectasias and broken capillaries represent a complementary, non-invasive treatment option, frequently used to help alleviate associated symptoms and improve the overall cosmetic appearance of the legs.
Among the main categories of these products are those formulated with vitamin K, vitamin C, and vitamin E, which help strengthen capillary walls, improve microcirculation, and reduce overall capillary fragility. Vitamin K, in particular, is well known for its important role in blood clotting and in the repair of blood vessels, and topical application of creams containing this vitamin can help reduce redness and minimize the visibility of superficial capillaries.
Ointments enriched with flavonoids, such as red vine leaf extract, bilberry extract, or butcher’s broom extract, function as vasoprotective agents, helping to improve venous tone and reduce the uncomfortable sensation of heavy or swollen legs.
Some creams also contain soothing and anti-inflammatory ingredients, such as arnica or aloe vera, which can help relieve itching and reduce any associated redness.
However, it is important to emphasize that these creams are not curative treatments. Rather, they offer symptomatic relief, helping to temporarily improve the appearance of the skin and reduce discomfort. For optimal results, these creams should be used as part of a broader, comprehensive approach that includes healthy lifestyle habits and, when necessary, targeted medical treatments as described above.
Prevention
Several good practices can be helpful in preventing the appearance of broken capillaries, or in slowing their progression once they have developed. Specifically, it is recommended to:
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Follow a balanced diet rich in vitamins, flavonoids, and fiber. Consume plenty of fruits and vegetables rich in vitamin C and vitamin K, such as citrus fruits, spinach, cauliflower, and cabbage, while reducing overall salt intake.
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Avoid excessively salty foods, since excess sodium intake promotes fluid retention, which can increase pressure within the blood vessels.
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Engage in regular physical activity. Even simply walking for twenty minutes daily can be genuinely helpful, though maintaining a more generally active lifestyle or engaging in regular structured exercise can further improve blood circulation and strengthen vein walls over time. Walking and swimming are considered particularly beneficial activities for improving circulation.
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Avoid prolonged hot baths, which can worsen capillary dilation.
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Avoid hot wax hair removal treatments.
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Avoid high heels and excessively tight-fitting clothing.
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Wear compression stockings if your occupation requires standing for many hours at a time.
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Avoid crossing your legs while sitting.
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Maintain a healthy body weight in order to avoid placing additional pressure on the veins.
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Avoid remaining in the same position, whether sitting or standing, for extended periods of time. When this is unavoidable, it is advisable to take brief breaks periodically, elevating the legs for a few minutes to promote healthy circulation.
Frequently Asked Questions
What type of doctor specializes in treating veins and capillaries?
The medical specialists who treat veins and capillaries are called angiologists or phlebologists. An angiologist generally treats diseases affecting all types of blood vessels, including arteries, veins, and capillaries, as well as the lymphatic system, while a phlebologist specifically focuses on venous conditions, such as varicose veins and venous insufficiency. In certain cases, vascular surgeons may become involved if surgical treatment of the veins is deemed necessary.
Do compression stockings serve a therapeutic purpose, or are they only useful for prevention?
Compression stockings offer both preventive and therapeutic benefits. While they cannot cure underlying venous disorders, they can provide meaningful relief from symptoms related to venous insufficiency and significantly improve overall comfort for those affected.
What should I do if I notice pain and swelling in one foot?
In cases of significant pain and swelling affecting a single foot, it is advisable to consult a doctor promptly for a thorough evaluation of the situation, as this pattern can sometimes indicate a more serious underlying vascular condition requiring prompt attention.
What can be done about visible and bothersome veins and capillaries?
Several measures can be adopted to address visible and bothersome veins and capillaries. The use of compression stockings can help improve circulation and reduce associated symptoms. Avoiding prolonged periods of standing or sitting, and maintaining a healthy body weight, are additional helpful measures. For more targeted treatment, procedures such as sclerotherapy, in which a solution is injected into the affected veins to close them, and laser treatment, which works by sealing visible capillaries, are both available options. In more severe or complex cases, vascular surgery may be indicated.
Are broken capillaries dangerous?
In most cases, broken capillaries are primarily a cosmetic concern and do not pose a serious health risk on their own. However, since they can sometimes indicate underlying chronic venous insufficiency, a progressive condition, it is worthwhile to have them evaluated by a specialist, particularly if accompanied by symptoms such as leg heaviness, swelling, or pain.
Will broken capillaries go away without treatment?
No, broken capillaries do not typically resolve on their own once they have formed. While their appearance may fluctuate somewhat depending on factors like temperature and activity level, achieving genuine improvement or resolution generally requires specific treatment, such as sclerotherapy or laser therapy.
