Burst blood vessels
Created: 09.01.2025
Updated 01.01.2026
Approved by: Consultant Dermatologist, Dr James Denny
What are burst blood vessels?
Burst blood vessels are small, visible blood vessels that appear just beneath the surface of the skin. They are often referred to as broken blood vessels or broken capillaries, and the medical term most commonly used is telangiectasias.
These vessels form when tiny blood vessels known as capillaries become permanently dilated. Capillaries are the smallest blood vessels in the body and play an essential role in delivering oxygen and nutrients to the skin. When they lose elasticity or are repeatedly damaged, they can remain visible through the skin.
Burst blood vessels typically appear red, pink, or bluish and may look like thin lines, branching patterns, or star-shaped clusters. When they radiate from a central point, they are often called spider naevi or spider veins.
They are usually painless, flat, and cannot be felt when touched. If a visible vein is raised, aching, or tender, it may instead represent a varicose vein, which requires a different type of medical assessment and treatment.
Why do you get burst blood vessels?
There are several common causes of burst blood vessels, and more than one factor is often involved.
Age and skin changes
As the skin ages, it becomes thinner and loses supportive collagen. This makes capillaries more fragile and more likely to become visible over time.
Sun exposure
Chronic sun exposure is one of the most important contributors, particularly on the face. Ultraviolet radiation weakens the walls of blood vessels and accelerates skin ageing, increasing the likelihood of broken capillaries, especially in fair-skinned individuals.
Hormonal factors
Hormonal changes can affect blood vessel tone. Burst blood vessels are more common during pregnancy and in people using hormonal treatments, including oral contraceptives or hormone replacement therapy.
Pressure and circulation
Occupations or lifestyles that involve prolonged standing or sitting can increase pressure in the veins, particularly in the legs. Being overweight can have a similar effect, contributing to the development of visible vessels.
Skin conditions and medical conditions
Certain medical conditions are associated with burst blood vessels. Rosacea is a common cause of facial telangiectasias. Chronic liver disease, connective tissue disorders, and long-term use of topical or oral corticosteroids may also increase the risk.
Blood clotting and vessel fragility
Although uncommon, conditions affecting blood clotting or blood vessel integrity can make capillaries more prone to damage. If burst blood vessels appear suddenly, extensively, or alongside unexplained bruising, medical review is advised.
Are burst blood vessels harmful?
In most cases, burst blood vessels are harmless and pose no health risk. They do not bleed, do not affect circulation, and are not a sign of internal bleeding.
However, assessment is recommended if they:
- Appear suddenly or spread rapidly
- Are associated with pain, swelling, or skin changes
- Occur alongside easy bruising or bleeding elsewhere
- Develop in the context of an underlying medical condition
What are the treatment options?
Although treatment is not medically necessary, many people seek care for cosmetic reasons or because the vessels are becoming more noticeable.
Laser treatment
Laser therapy is one of the most effective treatment options for burst blood vessels, particularly on the face. The laser targets the blood within the vessel, causing it to collapse and be reabsorbed by the body over time. Surrounding skin is left largely unaffected.
Hyfrecation (electrocautery)
Hyfrecation uses controlled heat energy to seal small vessels. It is often suitable for isolated or fine telangiectasias and may be used when laser treatment is not appropriate.
The choice of treatment depends on the size, depth, location, and number of vessels present. Multiple sessions may be required, especially for widespread areas.
Can burst blood vessels be prevented?
While not all burst blood vessels can be prevented, certain measures may reduce the risk of developing new ones:
- Use daily sun protection, including broad-spectrum sunscreen
- Avoid excessive heat exposure, including hot baths and saunas
- Be gentle with facial skin and avoid aggressive scrubbing
- Manage underlying skin conditions such as rosacea
- Maintain a healthy weight and regular movement if standing or sitting for long periods
Frequently asked questions
Are burst blood vessels the same as broken capillaries?
Yes. Burst blood vessels, broken blood vessels, and broken capillaries all describe the same condition. They occur when small capillaries near the skin surface become permanently widened and visible.
Are burst blood vessels a sign of a serious medical condition?
In most cases, no. Burst blood vessels are usually harmless and cosmetic. However, if they appear suddenly, spread quickly, or are associated with unexplained bruising, bleeding, or other symptoms, medical assessment is recommended to rule out underlying medical conditions.
Does sun exposure cause burst blood vessels?
Yes. Long-term sun exposure weakens the walls of capillaries and thins the skin, making blood vessels more visible. This is one of the most common causes of burst blood vessels on the face, particularly in fair-skinned individuals.
Can burst blood vessels go away on their own?
Once a capillary has become permanently dilated, it usually does not disappear without treatment. While new vessels can be prevented, existing ones typically require laser treatment or hyfrecation to reduce their appearance.
What is the most effective treatment for burst blood vessels?
Laser therapy is generally the most effective treatment, especially for facial vessels. Hyfrecation may be suitable for smaller or isolated vessels. The best treatment option depends on the size, depth, and location of the blood vessels.
