Subdural venous bleeding can occur over several weeks-months and present with vague neurological symptoms

Subdural haemorrhage is caused by rupture of the bridging veins in the outermost meningeal layer. They occur between the dura mater and arachnoid mater. Most commonly around the frontal and parietal lobes

Risk factors

• elderly
• alcoholism
• anticoagulation
• multiple falls

Subdural haemorrhages occur more frequently in elderly or alcoholic patients. These patients have more atrophy in their brains making vessels more likely to rupture.

PC:

• Slower onset Sx then a epidural haeamtoma
• Fluctuating Confusion and consciousness
• nausea, vomitting
• headache

Investigation:

• CT scan: On a CT scan they have a crescent shape and are not limited by the cranial sutures (they can cross over the sutures). Can have sulcal and ventricular effacement

Management

• Patients with a subdural bleed may not have a craniotomy due to the risk factors