Pseudotumor cerebri Idiopathic intracranial hypertension

• Facts:
  Usually found in young, obese women
  Can mimic tumor/mass
• History / PE:
  Daily HAs (worse in morning)
  Blurry vision
  Papilledema
  Abducent (sixth) nerve palsy
• Diagnosis:
  CT/MRI negative for masses (may see empty sella)
  Intracranial HTN
  Shrunken ventricles (MRI)
  Increased opening pressure
• Treatment:
  A cetazolamide (inhibits choroid plexus carbonic anhydrase)
  CSF draining
  Lumboperitoneal shunting
• Complications:
  Permanent vision loss
• Associated With:
  Isotrentinoin (used for acne vulgaris)
  Large doses of vitamin A
  Tetracyclines
  Steroid withdrawal
  Empty sella syndrome
• Differential Diagnosis:
  Normal pressure hydrocephalus (enlarged ventricles)