Bruising is common, but that does not mean it should be ignored. Whether you have knocked your shin on furniture, taken a hit during sport, or noticed a tender patch of skin turning blue, purple or black, it helps to know what normal bruising looks like, what first aid steps can reduce swelling and pain, and when a bruise may point to something more serious. In most cases, bruises improve on their own, but the right early care can make recovery more comfortable.
If you have ever asked, “how can I get rid of a bruise?” or “how do I relieve bruises faster?”, the short answer is this: act early, protect the area, and use simple first aid. Rest, ice, compression and elevation are the core steps for fresh bruising, especially in the first 24 to 48 hours after an injury.
At CPR First Aid, understanding bruising fits into the broader picture of everyday emergency care. If you want hands-on training in how to respond to common injuries, bleeding, fractures and medical emergencies, CPR First Aid offers HLTAID011 Provide First Aid and HLTAID009 CPR courses across Australia.
What Is Bruising?
Bruising happens when small blood vessels under the skin are damaged and leak blood into the surrounding tissue. That trapped blood creates the discolouration people recognise as a bruise. You may also hear a bruise called a contusion. Bruises are often tender, swollen and sore at first, then gradually fade as your body breaks down and reabsorbs the leaked blood.
A typical bruise is usually caused by a knock, bump or blunt force injury. Common sites include the arms, legs, elbows and knees. When the injury affects a joint or soft tissue area, you may notice both bruising and swelling together. That is why bruise first aid often overlaps with soft tissue injury care.
Most bruises are minor and settle without special treatment, often within about two weeks. Still, not every bruise is harmless. Large, painful or unexplained bruises can sometimes signal a deeper injury, a bleeding problem, or a larger collection of blood known as a haematoma.
For more on bruise basics, you can also read CPR First Aid’s guide on how to treat a contusion and its overview of skeletal and soft tissue injuries.
How Can I Get Rid of a Bruise?
If your goal is to reduce pain, swelling and how dramatic the bruise looks, the best time to act is early. You cannot erase a bruise instantly, but you can often limit how much swelling and discolouration develops by using first aid in the first day or two after the injury. Healthdirect and Mayo Clinic both recommend rest, cold therapy, compression when appropriate, and elevation.
1. Rest the Injured Area
Rest helps prevent further damage to the already-injured tissue. If you keep using the bruised muscle or limb heavily straight after the injury, you may aggravate bleeding into the tissue and increase swelling or pain. If the bruise is on your leg, arm, shoulder or thigh, ease off intense activity for a while.
2. Apply Ice Early
Cold therapy is one of the most useful first aid steps for fresh bruising. Use a cold pack or ice wrapped in a cloth or thin towel. Do not put ice directly on the skin. Healthdirect advises icing for 15 to 20 minutes every 2 to 4 hours for 24 to 48 hours, while Mayo Clinic recommends 20 minutes at a time, repeated over the first day or two.
The reason this works is simple: cold helps reduce swelling and pain, and may limit the amount of bleeding into the tissue. CPR First Aid’s own bruise guidance also recommends cold therapy first, not heat, during the early phase of bruising. You can read more in Is ice or heat the first aid to bruises?.
3. Use Compression if the Area Is Swelling
If there is swelling, a firm elastic bandage may help. The key point is that it should be supportive, not tight. Compression that is too tight can create more problems, including reduced circulation. If you notice numbness, tingling, increasing pain or colour changes beyond the bandage, loosen it and get advice if needed.
4. Elevate the Bruised Area
Elevation can help reduce swelling, especially if the bruise is on an arm or leg. Raise the injured area above the level of your heart where practical. Pillows can help support a bruised leg or arm while resting.
5. Check for Other Injuries
A bruise can sit alongside a sprain, fracture, cut, or deeper soft tissue injury. Healthdirect advises checking first for broken bones and bleeding because these may need a doctor or an ambulance. If the skin is broken, switch your focus to wound care as well. CPR First Aid’s article on basic wound care is useful if the bruise comes with a graze or cut.
How to Relieve Bruises in the First 48 Hours
If you are trying to work out the best bruise therapy in the first two days, keep it simple: protect the area, use cold, and avoid doing things that can worsen bleeding into the tissue. That generally means no direct heat, no aggressive massage, and no “testing it out” with strenuous activity just because you can still move.
For pain relief, general over-the-counter options may help, but use medicines carefully and follow pharmacy or medical advice. This is especially important if you take aspirin, anticoagulants or other blood-thinning medicines, because these can make bruising more likely or more noticeable. If you are unsure, check with your pharmacist or doctor rather than guessing.
If the bruise is on the head, get medical advice rather than assuming it is minor. Head injuries carry a different level of risk, particularly if there is loss of consciousness, vomiting, severe headache, seizures, fluid from the nose or ears, or if the person is taking blood-thinning medicine. In an emergency, call Triple Zero (000).
Ice or Heat: Which One Helps Bruising?
This is one of the most common questions people ask. For a fresh bruise, ice is the first aid option. Cold is used in the first 24 to 48 hours after injury to help reduce swelling and pain. Both Mayo Clinic and Healthdirect support this early cold-therapy approach, and CPR First Aid’s own bruise guidance does the same.
Heat is not the first treatment for a new bruise. Cleveland Clinic notes that once the initial period has passed, a heating pad or warm compress can be used after two days. CPR First Aid similarly frames heat as a later-stage option rather than immediate first aid. In other words, use ice first, and consider warmth later if the area is no longer acutely swollen and you are simply supporting comfort and recovery.
If you want a simple rule to remember, use cold early and warmth later. For most everyday bruises, that approach is practical, safe and easy to apply at home. For a fuller explanation, CPR First Aid’s article on ice versus heat for bruises is a strong companion resource.
How Long Does Bruising Last?
Most bruises fade within around two weeks without treatment. Some take less time, while more severe bruises can last longer. Cleveland Clinic notes that more severe bruising and haematomas may last a month or longer, depending on the cause and depth of the injury.
A bruise often changes colour as it heals. It may begin as red, blue, purple or black, then shift through darker and lighter shades before fading. That colour change is usually part of normal healing. What matters more is the overall trend: the bruise should gradually become less painful, less swollen and less obvious over time.
If your bruising does not seem to be improving, if it is getting larger, or if it stays very painful, it is worth having it assessed. A bruise that does not heal within two weeks, or that is paired with other symptoms such as numbness, weakness or circulation changes, deserves medical advice.
Treating a Deep Bruise: How to Heal a Haematoma
People often search for “how to heal hematoma” when what they really mean is a deep bruise with swelling or a lump. A haematoma is a collection of pooled blood inside the body. A standard bruise is one visible example of collected blood, but a haematoma can be deeper, larger and more painful.
A deeper bruise or haematoma may feel firmer, look more swollen, or form a noticeable lump. That does not automatically mean it is dangerous, but it does mean you should pay closer attention. Mayo Clinic notes that a lump forming over a bruise can be a sign of pooled blood, while Cleveland Clinic explains that some haematomas need medical attention depending on their size, location and symptoms.
The first aid principles are still broadly similar in the early stage: rest, protect the area, apply cold, and watch for worsening symptoms. But deep bruising should not be treated casually if the pain is severe, function is reduced, or the location is high-risk. A bruise near the head, eye, chest or abdomen needs more caution than one on the thigh or forearm.
Eye bruising is a good example. A black eye is a bruise around the eye, but healthdirect advises seeing a doctor because more serious eye injury needs to be ruled out. Immediate medical help is needed if a black eye comes with loss of vision, severe eye pain, ongoing headache, nausea, vomiting, dizziness, fainting or bleeding from the eye.
Head-related haematomas are another reason to escalate quickly. Healthdirect states that a subdural haematoma is blood collecting between the brain and skull and that it can be an emergency condition after a head injury. If someone becomes unconscious, has a seizure, or has fluid from the nose or ears after a head injury, call 000 for an ambulance.
When Should You See a Doctor About Bruising?
See a doctor if the bruise comes with intense pain, if you cannot move the injured part, if the area is swelling and bruising very quickly, or if the injured body part is not working properly. Healthdirect also advises medical review if the bruising might be hiding a fracture or if you are not sure how serious the injury is.
You should also get medical advice if you bruise more easily than other people, have bruises all over your body, have frequent nosebleeds or other bleeding, or have a personal or family history of bleeding disorders. Bruises that appear suddenly without clear cause should not be brushed off.
Mayo Clinic adds several other sensible reasons to seek care: very painful swelling, pain that is still present three days after a minor injury, frequent large bruises, and a lump over the bruise that may suggest a haematoma.
Emergency care is needed if bruising or a possible haematoma comes with trouble breathing, chest pain, loss of consciousness, one-sided weakness, balance problems, vision changes, trouble speaking, unexplained vomiting, or a sudden severe headache. Those are not normal bruise symptoms.
If you are worried but not sure whether the bruise needs urgent assessment, Healthdirect offers 24/7 advice on 1800 022 222. In an emergency, call 000.
Why Do Some People Bruise More Easily?
Not everybody bruises the same way. Healthdirect notes that children often get bumps and bruises because they are physically active, while older adults may bruise more easily because their skin is thinner and blood vessels can be more easily damaged.
Medicines can also play a role. Aspirin and anticoagulants, sometimes called blood thinners, can make bruising more likely. Queensland Health also notes that easy bruising is commonly linked with blood-thinning medicines such as aspirin, warfarin, apixaban and rivaroxaban.
That does not mean every bruise points to a medical disorder, but repeated unexplained bruising should not be ignored. If you keep bruising without obvious injury, or your pattern of bruising has changed, book a medical review.
Bruising With Cuts, Swelling or Soft Tissue Injury
Bruising does not always happen on its own. Sometimes it comes with swelling, a graze, a cut, or a more obvious soft tissue injury. If the skin is broken, clean and protect the wound as well as treating the bruise. CPR First Aid’s article on basic wound care explains how to rinse a wound, keep it clean and monitor it for infection.
If swelling is a major feature, it is worth reading CPR First Aid’s guide on how to reduce swelling after injury. And if you want the wider context on bruises, strains, sprains and related trauma, the article on skeletal and soft tissue injuries is a useful next read.
Learn Practical Bruise First Aid With CPR First Aid
Knowing how to respond to bruising is part of broader first aid confidence. A bruise may be minor, but the same incident can also involve bleeding, fractures, head injury, shock or collapse. That is why practical training matters. CPR First Aid delivers nationally accredited HLTAID011 Provide First Aid for people who want broad emergency response skills, plus HLTAID009 CPR for focused resuscitation training.
If you want to train in person, browse CPR First Aid training locations to find a class near you. Learning how to assess injuries, manage bleeding, support casualties and escalate when needed can make a real difference in everyday emergencies.
Final Word
Bruising is usually minor, but the right response still matters. If you want to know how to get rid of a bruise safely, start with rest, ice, compression and elevation in the first 24 to 48 hours. Use cold early, consider warmth later, watch for severe pain or rapidly worsening swelling, and treat head, eye, chest and abdominal injuries with extra caution. Most bruises settle within a couple of weeks, but a deep bruise, persistent lump or unexplained bruising deserves medical review.