When to seek care for bruising

Overview

A bruise is a mark on your skin caused by blood leaking from small blood vessels under the skin after an injury. It usually starts red or purple, then turns green, yellow, or brown as it heals.

Yes, nearly everyone gets bruises from minor bumps and knocks. Most are harmless and go away without treatment.

Anyone can get a bruise, but they are more common in children who are active, older adults with thinner skin, and people taking certain medications like blood thinners.

Symptoms

Common symptoms

• Skin discoloration — red, purple, blue, then green or yellow as it heals.
• Tenderness or mild pain when you touch the area.
• Swelling around the bruise.

Symptoms in children

• Bruises on bony areas like shins, knees, and elbows are normal from play.
• Bruises on soft parts like the back, tummy, or buttocks in a pattern (like grab marks) may need a doctor's assessment.
• If a child bruises easily and often without a clear cause, it's worth talking to a healthcare provider.

Symptoms in older adults

• Thinner skin and weaker blood vessels mean older adults bruise more easily.
• Bruises may take longer to heal and can be larger.
• If you are over 65 and notice a sudden increase in bruises, especially without injury, see your doctor.

Causes

Main causes

• Minor injuries — bumping into furniture, sports, falls.
• Aging — skin gets thinner and blood vessels become more fragile.
• Medications — blood thinners (like warfarin or aspirin) can increase bruising.
• Underlying medical conditions — like low platelets (cells that help blood clot) or liver disease.

Risk factors

• Being on blood-thinning medication or daily aspirin.
• Having a bleeding disorder (like haemophilia) or family history of easy bruising.
• Liver or kidney disease.
• Poor nutrition — low vitamin C or vitamin K can affect healing.

When to see a doctor

See a doctor urgently if:

• Unexplained bruising that appears suddenly and in many places.
• Bruises that are very painful, large, or continue to swell.
• Bruising along with fever, feeling very tired, or unexplained weight loss.

Book a routine appointment if:

• If you bruise very easily and it's been going on for weeks.
• If a bruise does not start to fade after 2 weeks.
• If you are starting a new medication and notice more bruising.

Diagnosis

Your healthcare provider will ask about your medical history, medications, and any recent injuries. They will examine the bruises and check for any other signs.

Tests that may be done

• Blood tests — to check platelet count and clotting function.
• A full blood count to rule out anaemia or other conditions.
• Liver function tests if liver disease is suspected.

What to expect at your appointment

The doctor will want to understand what might be causing the bruising. They may ask about family history and your diet. In most cases, no serious problem is found, and they will reassure you.

Treatment

Most bruises do not need medical treatment. The goal is to reduce discomfort and help the body reabsorb the blood. Treatment focuses on the cause if it's due to an underlying condition.

Self-care at home

• Apply a cold pack (or a bag of frozen peas wrapped in a cloth) to the bruise for 15–20 minutes several times a day in the first 48 hours.
• Rest the injured area and elevate it if possible to reduce swelling.
• After 2 days, you can use a warm compress (like a warm cloth) to help increase blood flow and speed healing.
• Avoid massaging the bruise — it can make it worse.

Medical treatments

If bruising is due to a medication, your doctor may adjust the dose or switch to another option (but never change medication without consulting them). If a bleeding disorder is found, treatments like vitamin K injections or clotting factor concentrates may be used. Always follow your healthcare provider's advice.

When is surgery considered?

Surgery is almost never needed for simple bruising. In very rare cases, a large, painful collection of blood (hematoma) may need to be drained by a doctor.

Living with this condition

If you bruise easily, protect your skin with long sleeves, pants, and wear sturdy shoes. Be careful around sharp edges and when moving heavy objects. Most people with easy bruising live normally with no restrictions.

Lifestyle tips

• Avoid activities that cause repeated bumps (like contact sports) until you talk to your doctor.
• Use soft padding on furniture corners, especially in homes with older adults.
• Keep floors clear of clutter to prevent falls.

Diet and exercise

A healthy diet rich in vitamin C (citrus fruits, berries) and vitamin K (leafy greens) supports skin health. Stay active with low-impact exercises like walking or swimming to maintain strength and balance.

Mental health and emotional wellbeing

Frequent unexplained bruising can be worrying. It's normal to feel anxious. Talk to your doctor to rule out serious causes — this often brings relief. If worry affects your daily life, ask your doctor about support.

Prevention

You can reduce your risk of bruises by taking safety measures to prevent falls and bumps. If you take blood thinners, use extra caution. There are no guaranteed ways to prevent all bruises.

Vaccines

Not applicable.

Screening programmes

There is no routine screening for bruising. But if you have a family history of bleeding problems, let your doctor know.

Complications

If left untreated

• If bruising is caused by an underlying condition like low platelets or liver disease, not treating it can lead to serious bleeding problems.
• A large, deep bruise (hematoma) can become infected or press on nerves or muscles if not treated.
• Rarely, easy bruising can be a sign of a serious disorder like leukaemia, so it's important to check with a doctor if you're concerned.

Long-term outlook

For most people, bruises heal completely without any issues. When bruising points to an underlying condition, early detection and treatment usually leads to a good outcome. Your healthcare team can help manage any long-term concerns.

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