Saturday, 16 October 2010

MRCP revision battle 31.6: Herpes Zoster Opthalmicus

Herpes zoster opthalmicus is the reactivation of varicella zoster in the area supplied by the opthalmic division of the trigeminal nerve.

It occurs in roughly 10% of cases of shingles.

There may be Hutchinson's sign = rash on the tip of nose, which indicates nasocillary involvement and is a strong risk factor for ocular involvement.

Treatment is oral antivirals for 7 to 10 days and urgent opthalmic review if there is ocular involvement.

On to the final revision battle of the day...