The prevalence of subdural effusion is higher in meningitis caused by Hemophilus influenza and in infants. Some signs may be similar to those seen in meningitis but follow the disease rather than accompany it. The effusion may cause fever to persist past the expected time after treatment.
Increased pressure can cause vomiting and seizures .
Surgical drainage of the effusion is often necessary. Full recovery from the effusion is expected. Lasting neurological problems are generally from the meningitis and not from the effusion. Injury may occur during seizures . The information provided herein should not be used for diagnosis or treatment of any medical condition.