statMed.org is designed to help students of medicine to learn about differential diagnosis.
It is NOT a clinical decision support tool and should NOT be used to guide decisions about clinical practice.
The website should not be used by people who are not studying medicine. If you are not studying medicine please leave the website. statMed.org is for medical educational purposes only and it is not intended to constitute professional medical advice, diagnosis or treatment.
It is NOT a symptom checker.
If you are concerned about a medical problem you should immediately seek medical assistance from a doctor.
statMed.org and it's affiliates, officers and employees shall not be held liable in anyway responsible for any direct or indirect consquences resulting from the use of the website.
Please enter at least one feature (symptom, sign or investigation result) before performing the calculation.
For example, if chest pain and low oxygen saturations were present, but haemoptysis was absent, the features section should look as follows:
To add a feature that is present, start typing and then click the green arrow.
To add the absence of a feature (i.e. a 'negative' finding), start typing then click the red cross.
If you want to remove a feature from the list simply click the grey cross in the box to the right of the feature.
Herpes zoster ophthalmicus (HZO) describes the reactivation of the varicella zoster virus in the area supplied by the ophthalmic division of the trigeminal nerve. It accounts for around 10% of case of shingles.
Incidence: 20.00 cases per 100,000 person-years
Peak incidence: 60-70 years
Sex ratio: 1:1
vesicular rash around the eye, which may or may not involve the actual eye itself
Hutchinson's sign: rash on the tip or side of the nose. Indicates nasociliary involvement and is a strong risk factor for ocular involvement
oral antiviral treatment for 7-10 days
ideally started within 72 hours
intravenous antivirals may be given for very severe infection or if the patient is immunocompromised
topical antiviral treatment is not given in HZO
topical corticosteroids may be used to treat any secondary inflammation of the eye