Tuesday, February 17, 2009

Idiopathic Intracranial Hypertension (IIH)

Description
Also called pseudotumor cerebri, benign intracranial and serous meningitis, it is a condition in which there is raised intracranial pressure in absence of space-occupying lesion, often presenting as headache and can potentially cause permanent visual loss.

Symptoms
Constant generalized severe headache
Transient visual obscurations (shadows, dark patches, or black spots in one or both eyes.
Pulsatile tinnitus
Visual sparkles (photopsia)
Diplopia

Signs
Papilledema
Enlarged blind spot.
Usually does not affect visual acuity.

Treatment
Most important aim of treatment is halting or preventing visual loss.
Weight reduction if obese.
Serial lumbar punctures can relieve syndrome.