Benjamin Wedro, MD, FACEP, FAAEM
Dr. Ben Wedro practices emergency medicine at Gundersen Clinic, a regional trauma center in La Crosse, Wisconsin. His background includes undergraduate and medical studies at the University of Alberta, a Family Practice internship at Queen's University in Kingston, Ontario and residency training in Emergency Medicine at the University of Oklahoma Health Sciences Center.
Mary D. Nettleman, MD, MS, MACP
Mary D. Nettleman, MD, MS, MACP is the Chair of the Department of Medicine at Michigan State University. She is a graduate of Vanderbilt Medical School, and completed her residency in Internal Medicine and a fellowship in Infectious Diseases at Indiana University.
- Hematoma facts
- What is a hematoma?
- What causes a hematoma?
- What are the types of hematomas?
- What are the symptoms of a hematoma?
- When should I call the doctor about a hematoma?
- How is a hematoma diagnosed?
- What is the treatment for a hematoma?
- What are the complications of a hematoma?
- Can hematomas be prevented?
- Related hematoma article:
Hematoma - on eMedicineHealth
- Patient Comments: Hematoma - Treatments
- Patient Comments: Hematoma - Experience
- Patient Comments: Hematoma - Symptoms
- Patient Comments: Hematoma - Diagnosis
- A hematoma is a collection of blood outside of a blood vessel.
- Symptoms of hematomas depend upon their location and whether adjacent structures are affected by the inflammation and swelling associated with the bleeding.
- Treatment of a hematoma depends upon which organ or body tissue is affected.
- Superficial hematomas of the skin and soft tissue, such as muscle, may be treated with rest, ice, compression, and elevation (RICE). Heat may also be considered.
What is a hematoma?
By definition, a hematoma is a collection of blood outside of a blood vessel. It occurs because the wall of a blood vessel wall, artery, vein or capillary, has been damaged and blood has leaked into tissues where it does not belong. The hematoma may be tiny, with just a dot of blood or it can be large and cause significant swelling.
The blood vessels in the body are under constant repair. Minor injuries occur routinely and the body is usually able to repair the damaged vessel wall by activating the blood clotting cascade and forming fibrin patches. Sometimes the repair fails if the damage is extensive and the large defect allows for continued bleeding. As well, if there is great pressure within the blood vessel, for example a major artery, the blood will continue to leak through the damaged wall and the hematoma will expand.
Blood that escapes from within a blood vessel is very irritating to the surrounding tissue and may cause symptoms of inflammation including pain, swelling, and redness. Symptoms of a hematoma depend upon their location, their size, and whether they cause associated swelling or edema.
Bruises and contusions
The medical term ecchymosis is what most people would recognize as a bruise, or blood that has leaked out of an injured blood vessel beneath the skin.. Another word for this injury is a contusion. An ecchymosis tends to be flat while a hematoma has more of a three dimensional character to it. As well, hematomas may occur in any organ and not just under the skin.
Hemorrhage is the term used to describe active bleeding. The term hematoma describes blood that has already clotted.
Next: What causes a hematoma?
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