Fifth disease (also known as erythema infectiosum) is another common, highly contagious illness that causes a distinct rash that is critical to diagnosis.

Fifth Disease

Is a herpes infection that can affect different parts of the eye.

Herpes Keratitis

Another common skin virus is herpes simplex virus (HSV 1) through oral herpes which stays around the lips, mouth, and face. 

Oral Herpes

Papillomas (warts) are the expression of common skin infections by *human papillomavirus* (HPV) and are transmitted by direct contact.

Papillomas

Roseola, sometimes called roseola infantum or exanthem subitum (“sudden rash”), is a mild viral infection usually caused by human herpesvirus-6 (HHV-6) and occasionally by HHV-7.

Roseola

Viral conjunctivitis tends to produce a discharge that is more watery than the thick discharge associated with bacterial conjunctivitis. The infection is contagious and can easily spread from one eye to the other or to other individuals through contact with eye discharge.

Viral Conjunctivitis

University of Southern Mississippi

Skin & Eye

The skin is made up of three different layers: 
- Epidermis
- Dermis
- Hypodermis.

Layers of the Skin

Bacterial Infections of the Skin and Eyes

Viral Infections of the Skin and Eyes

Fungal Infections of the Skin and eyes (Mycoses)

There is a variety of parasitic protozoans and helminths use the skin or eyes as their main portal of entry by physically burrowing into the skin or the mucosa to breach the skin barrier if there is a break in the skin it makes it easier for parasitic entry.

Protozoan and Helminthic Infections of the Skin and Eyes

Some microorganisms live on the skin and use sweat and sebum as a source of nutrition. These microbes often secrete antimicrobials to try and prevent other organisms from colonizing and infecting the skin.

Normal Microbiota of the Skin

Infections of the skin can result in different types of skin lesions, including:
- Crust
- Cyst
- Macule
- Papule
- Pustule
- Ulcer
- Vesicle
- Wheal
- Abscess
- Bulla
- Carbuncle
- Folliculitis
- Furuncle (boil)
- Pseudocyst
- Purulent
- Pyoderma
- Suppurative

Types of Skin Lesions

The eye is in direct contact with the environment, making it susceptible to infection. To prevent infection, the following anatomy of the eye are important: 
- Nasolacrimal drainage system
- Conjunctiva

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