Skip to main content


Medically reviewed by Last updated on May 6, 2024.

A hematoma is a collection of blood. A bruise is a type of hematoma. A hematoma may form in a muscle or in the tissues just under the skin. A hematoma that forms under the skin will feel like a bump or hard mass. Hematomas can happen anywhere in your body, including in your brain. Your body may break down and absorb a mild hematoma on its own. A more serious hematoma may need treatment.



You may need any of the following:

Return to the emergency department if:

Contact your healthcare provider if:

Follow up with your healthcare provider as directed:

You may need to have surgery if your hematoma is severe. You may also need other tests to make sure there is no other damage that needs to be treated. Write down your questions so you remember to ask them during your visits.


© Copyright Merative 2024 Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.

The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

Learn more about Hematoma

Care guides

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.