Most bruises heal completely within two to three weeks. A minor bump on your arm might fade in 10 days, while a deep bruise on your thigh could linger for a month or more. The timeline depends on where the bruise is, how hard the impact was, your age, and whether you take certain medications.
The Typical Healing Timeline
A standard bruise forms when small blood vessels under the skin break from an impact, leaking blood into the surrounding tissue. Your body immediately starts cleaning up that trapped blood, and you can actually track the progress by color. Within hours of the injury, the bruise turns dark blue or purple as hemoglobin in the pooled blood begins to break down. Over the following days, different byproducts of that breakdown produce a shifting palette of colors: dark blue fades to green, then yellowish-brown, then disappears entirely.
For most people, this full cycle takes about two weeks. Cleveland Clinic puts the average range at one to three weeks. A bruise that’s still visible at the three-week mark isn’t necessarily a problem, but it shouldn’t be getting darker or more painful during that time.
Why Some Bruises Last Much Longer
Location matters more than most people realize. A bruise on your leg will almost always take longer to heal than one on your face or arm. Gravity pulls the leaked blood downward, which can cause the bruise to spread and makes it harder for your body to reabsorb the fluid efficiently. Deep tissue bruises, where the impact reaches muscle rather than just the skin surface, also take longer because there’s more damaged tissue to repair.
Bone bruises are in a different category entirely. Unlike a skin bruise, which is essentially trapped blood under the surface, a bone bruise involves tiny fractures within the bone itself. Most bone bruises last a few weeks, but severe ones can take months to heal completely. The timeline depends on which bone is affected and whether other injuries happened at the same time. Bone bruises also carry real risk of worsening if you don’t rest the area, unlike a typical skin bruise that’s hard to make worse.
Age, Medications, and Slower Healing
As you get older, your skin thins and loses some of the fatty cushioning that protects blood vessels from impact. This is why older adults bruise more easily and why those bruises tend to stick around longer. The blood vessels themselves also become more fragile with age.
Several categories of medication can extend how long a bruise lasts. Blood thinners like warfarin interrupt the clotting process, meaning more blood leaks out initially and takes longer to clear. Anti-inflammatory drugs like ibuprofen interfere with the same clotting pathway, which is why doctors sometimes recommend avoiding them after an injury. Corticosteroids like prednisone impair multiple stages of tissue repair, from the initial inflammatory response to the formation of new connective tissue. Chemotherapy drugs slow cell growth broadly, which includes the new cells your body needs to repair damaged tissue.
If you’re on any of these medications, a bruise lasting four weeks or longer isn’t unusual. That said, a bruise that keeps growing or becomes increasingly painful deserves attention regardless of what medications you take.
What Color Changes Tell You
The color of your bruise is a rough progress report. If you have lighter skin, expect the bruise to start red or purple, shift to blue, then transition through green and yellow before fading. On darker skin tones, bruises often appear purple, dark brown, or black initially, then lighten to brown, green, or yellow as healing progresses. These color changes happen because your body breaks down hemoglobin into different compounds at each stage, and each compound has its own pigment.
The key thing to watch is progression. A bruise that’s moving through these color stages is healing normally, even if it’s taking its time. A bruise that stays the same dark color for weeks, or that seems to be spreading rather than shrinking, is behaving differently from a normal healing bruise.
Does Ice Actually Speed Things Up?
The classic advice is to ice a fresh bruise, compress it, and elevate the area. The idea is sound in principle: cold constricts blood vessels, limiting how much blood leaks out, while elevation uses gravity to reduce swelling. In practice, the evidence is surprisingly thin. The doctor who originally described the RICE protocol (rest, ice, compression, elevation) later walked back the recommendation, acknowledging it wasn’t based on strong clinical data.
Some providers now suggest that aggressively reducing inflammation might actually slow recovery, since inflammation is part of how your body initiates repair. That said, ice in the first 24 to 48 hours is still widely considered reasonable for comfort and to limit the initial size of the bruise. Elevation is unlikely to hurt and may help, particularly for leg bruises. There’s no clear evidence that compression makes a meaningful difference for a typical bruise.
Signs a Bruise Needs Medical Attention
A bruise that hasn’t improved after three weeks is worth having checked. The same goes for bruises that appear frequently without an obvious cause. Unexplained bruising can sometimes point to a clotting disorder like hemophilia or von Willebrand disease, conditions where your blood doesn’t clot properly. In less common cases, frequent unexplained bruising can be associated with certain cancers.
Large, painful bruises that feel firm or keep expanding may be hematomas, which are pockets of clotted blood that can sometimes signal a deeper injury like a fracture or internal bleeding. Tiny pinpoint-sized spots, called petechiae, look like a fine rash of miniature bruises and can appear on your skin, inside your mouth, or on your eyelids. These have a range of causes, from infections to low platelet counts, and are worth investigating promptly.
Bruising that comes alongside repeated fevers, swollen lymph nodes, night sweats, or unexplained weight loss is a combination that warrants a visit to your doctor sooner rather than later. In rare cases, a dark spot that looks like a bruise but never heals could be a form of skin cancer called melanoma rather than a bruise at all.