Acute (subacute) subdural hematoma
Alternative names:
acute/subacute subdural hematoma; acute/subacute subdural
hemorrhage; epidural hematoma
Symptoms:
- Recent injury or trauma
to the head
- Loss of consciousness
after original injury
- Drowsiness
- Headache, steady
or fluctuating
- Impaired vision
- Eyes retract into the socket (enophthalmos)
- Eyelid drooping
on one side only (unilateral)
- Decreased sensation
or numbness
- Lower extremities (right leg or left leg)
- Upper extremities (right arm or left arm)
- Face (right side of face or left side of face)
- Individual is aware of reduced ability to feel (sensory
deficit)
- Inattention to environment on the same side as the reduced
sensation
- Loss of movement
(paralysis)
- On only one side of the body
- The individual is aware of movement difficulty (motor
deficit)
- Confusion, delirium
- Changes in personality
- Decreased memory
- Slowed thought processes
- Impaired speech or language
- Loss of the ability to read but can still understand
speech
- Unable to repeat a phrase
- Slurred speech
(dysarthria)
- Unable to use muscles for speech but muscles are
not paralyzed
- Speech is missing, mute
- Impaired ability to name objects (anomia)
- Comprehension of spoken word is impaired
- Withdrawal from social interaction
- absent sweating
on one side of the forehead
Symptoms peculiar to infants less than 6 months old:
- Fontanelles - bulging
- Increased head circumference
- Sutures - separated
- Irritability
- high-pitched cry
- Setting-sun sign
- The eyes appear to look downward and there is a small
amount of white sclera
visible above the iris;
it may be easiest to see when the infant is changed
from a sitting position to supine (lying face up).
- Focal seizures
- Generalized tonic-clonic
seizure
Signs and tests:
Consult the health care provider promptly for any head
injury that results in even a brief loss
of consciousness, or if other symptoms are present after
head injury even without loss of consciousness. Acute/subacute
subdural hematoma may be diagnosed after the health care provider
has ruled out other possible causes of symptoms that occur
after a head injury, such as intracerebral
hemorrhage.
Examination may show focal neurologic deficits (localized,
specific brain function changes such as decreased movement
or sensation). Reflexes may be abnormal. There may be signs
of increased intracranial
pressure. The skull may be tender to when gently tapped
on one or both sides. Examination may reveal a need for emergency
surgery to relieve pressure within the head without further
testing to pinpoint the location and type of injury.
In abused infants, there may be a history of poor feeding
and/or failure to thrive.
Retinal hemorrhages are peculiar to infants with subdural
bleeding that results from shaking (shaken baby syndrome)
or from blows to the head.
Tests:
- A head CT scan confirms
the diagnosis of subdural hematoma and will pinpoint the
exact location of the hematoma.
- This disease may also alter the results of a cranial
MRI.
Update Date: 10/08/99
Updated by: adam.com editorial
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