Periorbital cellulitis is an inflammation and infection of the eyelid and portions of skin around the eye. It is caused by infection of the sinuses around the nose.
Pink eye or conjunctivitis refers to a redness or irritation of the membranes on the inner part of the eyelids and the membranes (conjuctiva) covering the whites of the eyes. These membranes react to a wide range of bacteria, viruses, allergy- provoking agents, irritants, and toxic agents, as well as to underlying diseases within the body. Viral and bacterial forms of conjunctivitis are common in childhood but can occur in people of any age. Overall however, there are many causes of pink eye. These can be classified as either infectious or noninfectious.
Causes - Redness of the whites of the eye (sclera) may have several causes with different types of presentations. Here are some common problems and their most usual cause, but there can be some variations:
- Red eye with yellow eye discharge - "pink eye" or bacterial conjunctivitis
- Red eye without discharge and with a cold - viral conjunctivitis
- Red eyes with itching, watery discharge - allergic conjunctivitis
- Red eye with history of trauma or chemical in the eye
- Red eye with pain, watery discharge - possible foreign body in the eye or corneal abrasion
- Eye with redness of the skin around the eye and swelling of the tissue around the eye - infection of the tissue around the eye (periorbital cellulitis)
- Eye discharge in a newborn baby - blocked tear duct (naso-lacrimal duct)
- Swollen lump near the lid margin - stye
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