Why does alcohol use disorder cause easy bruising?

A bruise forms when small blood vessels leak beneath the skin. Alcohol can increase the chance of bumps and falls, and regular heavy use may be associated with poor food intake. It can also affect the liver, which makes substances involved in clotting, and may affect platelet production or function. Easy Bruising is a common presentation of Alcohol Use Disorder, but it does not establish the cause of a bruise. Medicines, blood disorders and injuries can produce similar changes and need consideration.

Arrange a medical review for new, unexplained or increasing bruises. Be open about alcohol use, medicines and supplements so the clinician can assess bleeding risk safely. Blood tests may check blood cells, liver function and clotting. Do not suddenly stop heavy regular alcohol use without medical advice, because withdrawal can be dangerous. A clinician can help make a safer plan and connect you with alcohol-support services.

Get urgent medical help for bleeding that will not stop, vomiting blood, black or bloody stool, blood in urine, severe abdominal pain, yellowing of the eyes or skin, confusion, seizures or a head injury. Urgent assessment is also needed for shaking, sweating, hallucinations or severe agitation after reducing or stopping alcohol. These can be signs of serious bleeding, liver illness or alcohol withdrawal.

Ask what may be contributing to the bruising, which tests are appropriate, whether any medicines raise bleeding risk, and how to reduce alcohol safely with support.