Busted blood vessels happen when small capillaries or veins near the skin’s surface break open, leaking blood into surrounding tissue. The result is a visible red, purple, or blue mark that can show up anywhere on the body. Causes range from something as simple as a hard sneeze to underlying medical conditions that weaken vessel walls over time.
How Busted Blood Vessels Look
Not all broken vessels look the same, and the size of the mark tells you something about what happened. Tiny pinpoint dots less than 4 millimeters across are called petechiae. Mid-sized purple spots between 4 and 10 millimeters are purpura. Anything larger than 1 centimeter is an ecchymosis, which is essentially what most people call a bruise. A bright red patch on the white of your eye is a subconjunctival hemorrhage, one of the most dramatic-looking but least dangerous types.
Physical Strain and Pressure
Any sudden spike in pressure inside your blood vessels can cause one to pop. This is especially common in the delicate vessels of the eyes and face. The Mayo Clinic lists coughing, sneezing, straining, and vomiting as common triggers for broken vessels in the eye. Rubbing your eye too hard or a minor bump can do it too.
Heavy lifting, intense exercise, and even prolonged crying create similar pressure surges. Straining during childbirth frequently causes petechiae on the face and chest. Wearing a tight cast, poorly fitted shoes, or even using crutches can put enough sustained pressure on skin to break capillaries in that area.
Aging and Sun Damage
As you get older, your skin loses collagen, the protein that acts as structural scaffolding for your blood vessels. Without enough collagen support, the connective tissue in your skin can no longer protect tiny vessels from even minor bumps. A slight knock against a table corner that wouldn’t have left a mark at 30 can produce a large purple bruise at 70.
Sun exposure accelerates this process significantly. Years of ultraviolet radiation cause the deeper layers of skin to thin and weaken, making blood vessels much more fragile. This condition, known as actinic purpura, is common on the forearms and hands of older adults who’ve had substantial lifetime sun exposure. Women tend to be more affected because they start with less collagen than men, and collagen decreases by roughly 1% per year in both sun-exposed and protected skin. Actinic purpura may also signal broader collagen loss throughout the body, including in bone.
Medications That Increase Bruising
Several common medications make broken blood vessels more likely by interfering with your blood’s ability to clot. Over-the-counter pain relievers like aspirin, ibuprofen, and naproxen all reduce clotting. Prescription blood thinners such as warfarin, rivaroxaban, and apixaban do the same more aggressively. Anti-platelet drugs prescribed after heart procedures also fall into this category.
Corticosteroids, whether taken as pills or applied as creams over long periods, thin the skin itself. Thinner skin means less cushioning around your blood vessels, so they break more easily. If you’re on any of these medications and notice increased bruising, that’s a known side effect rather than a mystery, but it’s worth mentioning to your prescriber if it becomes extensive.
Broken Capillaries on the Face
Visible red or purple threadlike lines on the cheeks, nose, and chin are a specific type of broken vessel called telangiectasia. These are permanently dilated capillaries that become visible through the skin. They’re especially common in people with rosacea or fair skin.
The triggers that worsen facial broken capillaries are anything that causes repeated flushing or skin irritation. Sunlight, extreme heat or cold, strong wind, alcohol, smoking, hot drinks, and spicy foods all contribute. Harsh skin care products and abrasive cleansers can aggravate them further. Unlike a bruise that fades, these broken capillaries tend to persist because the vessel walls have been permanently stretched.
Nutritional Deficiencies
Vitamin C plays a direct role in building collagen, which keeps blood vessel walls strong and flexible. When your body doesn’t get enough vitamin C, vessel walls become fragile and break easily, producing bruises and small hemorrhages, particularly around hair follicles. Severe deficiency (scurvy) is rare in developed countries but mild deficiency is more common than most people realize, especially in smokers and people with very restricted diets.
Vitamin K is essential for blood clotting. Without adequate vitamin K, your blood can’t form clots properly, so even minor vessel breaks bleed more than they should. This is particularly relevant for newborns, who have naturally low vitamin K levels, but adults with poor dietary intake or conditions that impair fat absorption can also become deficient.
Underlying Medical Conditions
Sometimes frequent or unexplained broken blood vessels signal something more systemic. Vasculitis, a condition where the immune system attacks blood vessel walls, causes inflammation that can stretch, weaken, or damage vessels throughout the body. Vasculitis can develop on its own, or it can be triggered by infections, medications, or other autoimmune diseases.
Platelet disorders also play a role. Platelets are the tiny cell fragments responsible for plugging breaks in vessel walls. When your platelet count drops too low (a condition called thrombocytopenia), small vessel breaks that would normally seal within seconds instead leak blood into the skin. Leukemia, liver disease, and certain autoimmune conditions can all reduce platelet counts or impair platelet function.
When Broken Vessels Are Concerning
Most busted blood vessels are harmless. A single bruise from a known bump, a red eye after a coughing fit, or a few petechiae after vomiting will typically resolve on their own within one to three weeks. Broken vessels in the eye usually clear in about two weeks without treatment.
The pattern matters more than any single spot. Unexplained bruises that appear without any injury, petechiae that spread rapidly across large areas of your body, or broken vessels accompanied by fever, fatigue, or bleeding from the gums or nose suggest something beyond simple mechanical breakage. Frequent large bruises in someone not taking blood-thinning medication also warrant investigation, since they can point to clotting disorders, liver problems, or other conditions that need diagnosis.