Idiopathic intracranial hypertension (also known as pseudotumour cerebri and formerly benign intracranial hypertension) is a condition classically seen in young, overweight females.

Risk factors

• obesity
• female sex
• pregnancy
• drugs (if occurs secondary to medication, then it is not idiopathic)
  • combined oral contraceptive pill
  • steroids
  • tetracyclines
  • vitamin A
  • lithium

PC

• headache worse in the morning, last thing at night, with valsalva
  • relieved on standing
• blurred vision
• papilloedema (usually present)
• enlarged blind spot
• sixth nerve palsy may be present

Investigationss

• LP - raised opening pressure

Management

Conservative: