Herpes zoster ophthalmicus Herpes zoster ophthalmicus Herpes zoster ophthalmicus (HZO) and also known as ophthalmic zoster is a disease characterised by reactivation of dormant varicella zoster virus residing within the ophthalmic nerve (the first division of the trigeminal nerve). This condition is an important subtype of shingles, representing 15% of all cases. Herpes zoster ophthalmicus is transmitted via direct contact or droplets. Varicella zoster virus is a DNA virus which produces acidophilic intranuclear inclusion bodies. The virus is neurotrophic in nature. The frontal nerve is more commonly affected than the nasociliary nerve or lacrimal nerve. Anterior uveitis develops in 40–50% of cases with
Behçet's disease manifestations of the disease. The mechanism can be immune-mediated or thrombotic. The term dates back to at least 1990. Behçet's disease Behçet's disease (BD) is a type of inflammatory disorder which affects multiple parts of the body. The most common symptoms include painful mouth sores, genital sores, inflammation of parts of the eye, and arthritis. The sores typically last a few days. Less commonly there may be inflammation of the brain or spinal cord, blood clots, aneurysms, or blindness. Often the symptoms come and go. The cause is unknown. It is believed to be partly genetic. Behçet's is not contagious.