Define Hematoma

Learn about hematoma, a collection of blood outside blood vessels. Discover causes, symptoms, and treatment of this condition. Find out how to prevent hematomas.

What is a Hematoma?

A hematoma is a localized collection of blood outside of blood vessels, usually in tissue or an organ. It occurs when blood vessels are damaged or ruptured, causing blood to seep out and pool in the surrounding area. Hematomas can vary in size and severity, ranging from small bruises to large, painful swellings.

Types of Hematoma

There are several types of hematomas, including:

  • Subungual hematoma: Bleeding under the nail bed, often due to trauma
  • Subdural hematoma: Bleeding between the brain and its outermost covering
  • Intracerebral hematoma: Bleeding within the brain tissue
  • Intramuscular hematoma: Bleeding within muscle tissue

Causes of Hematoma

Hematomas can be caused by a variety of factors, including:

  • Trauma or injury, such as a fall or car accident
  • Surgery
  • Blood clotting disorders
  • Medical conditions that weaken blood vessels

Symptoms of Hematoma

The symptoms of a hematoma may vary depending on its location and severity, but common signs include:

  • Pain or tenderness at the site of the hematoma
  • Swelling and discoloration of the skin
  • Restricted movement or range of motion
  • Pressure or fullness sensation

Treatment and Prevention

Treatment for a hematoma typically involves rest, ice, compression, and elevation (RICE). In some cases, drainage or surgery may be necessary to remove the accumulated blood. To prevent hematomas, it is essential to take precautions to avoid injuries and trauma, especially in high-risk activities or sports.


Hematomas are common and can occur in various parts of the body. Understanding the causes, symptoms, and treatment options for hematomas is crucial for managing this condition effectively. By taking preventive measures and seeking prompt medical attention when needed, hematomas can be treated and resolved efficiently.

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