A broken vein shows up on the skin as a discoloration, but exactly what it looks like depends on the type of vessel involved, how deep it sits, and how much blood has leaked. The most common forms range from tiny red dots smaller than a pinhead to flat purple patches to the familiar spreading bruise that changes color over days. Here’s how to tell them apart.
The Three Main Appearances
When a blood vessel breaks under the skin, the leaked blood creates a visible mark. These marks fall into three general categories based on size and depth.
Tiny red dots (petechiae): These are pinpoint spots, usually less than 2 millimeters across, caused by the smallest blood vessels (capillaries) breaking. They look like a scattering of red or reddish-purple dots and often appear in clusters on the arms, legs, or torso. They’re flat against the skin, not raised.
Flat purple or red patches (purpura): When blood collects under the tissue in a slightly larger area, you get flat patches that can range from a few millimeters to a centimeter or more. These are purple or dark red.
Bruises (ecchymosis): The most recognizable form. A bruise starts as a pinkish-red mark, then deepens to dark blue or purple within hours. Over the following days, it shifts through violet, green, dark yellow, and finally pale yellow before disappearing. Most bruises heal completely within about two weeks.
One quick way to confirm you’re looking at bleeding under the skin rather than simple redness or irritation: press on it. Broken blood vessels don’t blanch (turn pale) when you apply pressure. Redness from inflammation or irritation does.
How Bruise Color Changes Over Time
A bruise is essentially a pocket of leaked blood trapped under the skin, and its color tells you roughly how old it is. In the first hours, it appears pink or red as fresh blood pools near the surface. Within a day or two, that shifts to a dark blue or purple as the blood loses oxygen. By days four through seven, the body starts breaking down the trapped blood cells, and the bruise fades to a greenish or brownish tone. In the final stage, it turns dark yellow, then pale yellow, and gradually disappears.
This entire cycle typically takes about two weeks for an average bruise. Larger or deeper bruises can take longer, and bruises on the legs tend to heal more slowly than those on the arms or face because of gravity pulling blood downward.
Spider Veins: Broken Vessels That Don’t Fade
Not all broken veins produce bruises. Spider veins (the medical term is telangiectasias) are damaged blood vessels just beneath the skin’s surface that remain permanently visible. They look like thin red, blue, or purple lines and often appear in clusters resembling spider webs or tree branches. You’ll commonly see them on the legs, ankles, and face.
The key difference between spider veins and a bruise is that spider veins don’t change color over time or heal on their own. A bruise is a one-time leak that your body cleans up. Spider veins are structurally damaged vessels that stay dilated and visible indefinitely. They’re flat against the skin, painless in most cases, and purely cosmetic for many people, though they can sometimes signal underlying circulation issues in the legs.
Broken Veins on the Face
Broken capillaries on the face are extremely common and look like fine red or purple lines, often appearing on the nose, cheeks, and chin. Sun exposure, temperature extremes, alcohol, rosacea, and even sneezing or vomiting hard enough to increase pressure in the face can cause them. Injuries or skin trauma to the face may also lead to broken blood vessels in that area.
These facial spider veins are usually harmless but tend to be permanent once they form. They differ from bruises in the same way body spider veins do: they stay the same color rather than cycling through the bruise spectrum, and they have a distinctive branching or web-like pattern rather than a blotchy shape.
What Causes Veins to Break
The most obvious cause is physical impact, like bumping into furniture or getting hit. But veins can also break from surprisingly minor triggers. Scratching the skin over a varicose vein, shaving your legs, or even a pet’s scratch can be enough, particularly if the skin has thinned with age or the veins are already enlarged.
Several factors make broken veins more likely. Aging thins the skin and weakens vessel walls, which is why older adults bruise more easily. Medications that affect blood clotting, including aspirin and prescription blood thinners, increase both the likelihood and the size of bleeding under the skin. Long-standing varicose veins gradually stretch the skin above them until it becomes fragile, and the dark bluish veins may become visible through that thinned skin even before any actual rupture occurs.
Surface Bruise vs. Something Deeper
A standard bruise from a broken surface vein is discolored, mildly tender at first, and gradually fades over one to two weeks. The pain usually subsides as the color fades. Most are only a little painful, though the soreness can range from barely noticeable to quite tender depending on the location and force of impact.
A deeper vascular problem looks and feels different. A blood clot in a deep leg vein can cause tenderness, pain, redness, and swelling in the leg, but the skin discoloration tends to be more diffuse rather than a well-defined bruise shape. A blocked artery in the leg can make the skin feel cold and look pale rather than dark. These deeper issues don’t follow the typical bruise color progression and are often accompanied by swelling, warmth, or a feeling of heaviness that a simple bruise wouldn’t cause.
Blown Veins From Medical Procedures
A “blown vein” happens when a needle punctures through or damages a vein during a blood draw or IV insertion. The immediate signs are pain or discomfort at the site, a tight feeling in the skin, and swelling around the needle. The area may darken into a bruise over the next few hours. This is generally minor and heals on its own.
Signs that a blown vein needs attention include worsening pain after the initial soreness, increasing swelling, warmth around the site, fever, or any drainage from the puncture point. These could indicate infection or a more significant injury to the vessel wall.
When the Appearance Is Concerning
Most broken veins are harmless and heal without any treatment. But certain patterns deserve attention. Petechiae that appear suddenly across large areas of the body without any injury can signal a problem with blood clotting or platelet levels. Bruises that appear frequently without clear cause, especially if they’re large or slow to heal, may point to a bleeding disorder or medication side effect. And any broken vein that’s accompanied by significant swelling, warmth, numbness, or skin that stays pale or cold rather than bruised warrants prompt evaluation.