What should you know about possible reasons for easy bruising?

A bruise forms when small blood vessels leak beneath the skin. The colour may change as the body clears the trapped blood. Bruises can be more noticeable when skin becomes thinner with age or long-term sun exposure; this pattern is associated with sun-damaged skin. Blood-thinning medicines, steroids, and some supplements can also make bruising easier, but prescribed medicines should not be stopped without advice.

A clinician may ask when the bruising began, where it appears, whether there was an injury, and whether relatives bruise or bleed easily. They may also ask about nosebleeds, heavy periods, gum bleeding, fatigue, or recent illness. The number and size of bruises matter less than a clear change from your usual pattern and other symptoms.

Keep a simple record of new bruises, their locations, possible knocks, medicines, and supplements. Protect exposed skin from further injury and use sun protection to limit additional skin damage. For a fresh bruise, a wrapped cool pack for short periods may ease discomfort. Arrange a routine appointment if bruising is new, frequent, unexplained, or increasing, and bring your medicine list.

Seek prompt medical advice for bruises that are large, painful, rapidly appearing, or accompanied by unusual bleeding, marked tiredness, fever, or an unwell feeling. Get urgent help for bleeding that will not stop, vomiting blood, black stools, a severe headache after an injury, or sudden weakness. These warning signs need attention regardless of whether the skin also looks sun-damaged.

Ask whether a medicine or supplement could contribute, whether blood tests are appropriate, how sun-damaged skin affects bruising, and which bleeding symptoms should lead you to seek urgent help.