The full form of SDH in Medical is Subdural Hematoma. This means having leakage of blood out of a torn vessel in a compartment below the dura mater (a membrane between the skull and the brain). It can be served, and you should be seeking by the doctor if you have a head injury.
A kind of bleed, subdural hematoma, is found inside your head. It happens within your skull but outside the brain tissue. There are three membrane layers found in the brain called meninges. One with SDU may experience a crack in a blood vessel and leakage of blood from the broken vessel into the compartment underneath the dura mater membrane layer.
Because SDH is a type of traumatic brain injury, there are various signs and symptoms of the condition, including: