Home > Health Library > Subdural Hematoma
A subdural hematoma is an increase in pressure within the skull
that happens when blood collects in the space between the skull and the brain.
The bleeding is usually caused by torn veins in the brain following a head
Symptoms of a subdural hematoma, which can develop rapidly or
If the bleeding is severe, symptoms may develop within minutes or
hours. In babies, one or both of the two soft spots on the head (fontanelles)
If the bleeding is minimal, symptoms may not develop for weeks.
Even after the bleeding has stopped and the blood has clotted, fluid from
surrounding tissues can be absorbed into the space, slowly increasing the
pressure within the skull.
Current as of:
August 21, 2015
William H. Blahd, Jr., MD, FACEP - Emergency Medicine & H. Michael O'Connor, MD - Emergency Medicine
To learn more about Healthwise, visit Healthwise.org.
© 1995-2015 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.
I Want To...
Join Our Social Network