If you're experiencing easy bruising, you might have questions about what's causing the problem and what you can do about it. Find out what role aging plays in bruising and when to consult a doctor.

By Mayo Clinic Staff

Yet another bruise. What caused that dark, unsightly mark on your leg? You don't recall bumping into anything. Lately, however, you seem to be bruising frequently. Is this cause for concern?

Easy bruising is common with age. Although most bruises are harmless and go away without treatment, easy bruising can sometimes be a sign of a more serious problem.

Most bruises form when small blood vessels (capillaries) near the skin's surface are broken by the impact of a blow or injury — often on the arms or legs. When this happens, blood leaks out of the vessels and initially appears as a black-and-blue mark. Eventually your body reabsorbs the blood, and the mark disappears.

Generally, harder blows cause larger bruises. However, if you bruise easily, a minor bump — one you might not even notice — can result in a substantial bruise.

Some people — especially women — are more prone to bruising than are others. As you get older, your skin also becomes thinner and loses some of the protective fatty layer that helps cushion your blood vessels from injury.

Aspirin, anticoagulant medications and anti-platelet agents reduce your blood's ability to clot. As a result, bleeding from capillary damage might take longer than usual to stop — which allows enough blood to leak out and cause a bruise. Certain dietary supplements, such as fish oil and ginkgo, also can increase your bruising risk due to a blood-thinning effect.

Topical and systemic corticosteroids — which can be used to treat various conditions, including allergies, asthma and eczema — cause your skin to thin, making it easier to bruise.

If you experience increased bruising, don't stop taking your medications. Consult your doctor about your concerns. Also, make sure your doctor is aware of any supplements you're taking — especially if you're taking them while on a blood-thinning drug. Your doctor might recommend avoiding certain over-the-counter medications or supplements.

Easy bruising sometimes indicates a serious underlying condition, such as a blood-clotting problem or a blood disease. Consult your doctor if you:

  • Have frequent, large bruises, especially if your bruises appear on your trunk, back or face, or seem to develop for no known reasons
  • Have easy bruising and a history of significant bleeding, such as during a surgical procedure
  • Suddenly begin bruising, especially if you recently started a new medication
  • Have a family history of easy bruising or bleeding

These signs and symptoms can indicate low levels of or abnormally functioning platelets — components of blood that help it clot after an injury — or problems with proteins that help the blood clot. To diagnose the cause of your bruising, your doctor might check your blood platelet levels or do tests that measure the ability of your blood to clot.

Other serious causes of bruising include domestic violence or abuse. If a loved one has an unexplainable bruise, particularly in an unusual location such as on the face, you might ask about the possibility of abuse.

To prevent minor bruising, eliminate household clutter that could cause bumps or falls. Long-sleeved shirts and pants can provide an extra layer of protection for your skin.

Once a bruise has formed, however, not much can be done to treat it. Most bruises eventually disappear as your body reabsorbs the blood — although healing might take longer as you age. It might help to elevate the affected area and apply ice. If the sight of a bruise bothers you, cover it with clothing or makeup.

You might not be able to eliminate easy bruising. However, taking simple steps to protect your skin and avoid injury can help you try to stay bruise-free.

May 05, 2014