(Pink Eye)


Conjunctivitis is swelling and irritation in the eye. It affects the tissue that covers the eye and lines the inner surface of the eyelid. This tissue is called the conjunctiva.
Eye with Conjunctivitis
Nuclus factsheet image
Copyright © Nucleus Medical Media, Inc.


There are many causes of conjunctivitis including:
  • Viral infection
  • Bacterial infection
  • Allergic reaction, usually related to seasonal allergies
  • Chemical irritation caused by:
    • Air pollutants
    • Soap
    • Smoke
    • Chlorine
    • Make-up
    • Other chemicals
Both viral and bacterial conjunctivitis are highly contagious.

Risk Factors

This condition is more common in children. Factors that may increase your risk of conjunctivitis include:
  • Contact with a person who has conjunctivitis
  • Sharing towels, linens, or other objects (even doorknobs) with an infected person
  • Exposure to chemical or environmental irritants
  • Contact lenses , especially if contacts are not cleaned and stored properly
  • Seasonal allergies or contact with known allergens


Symptoms include:
  • Red, watery eyes
  • Swollen inner eyelids
  • Scratchy feeling in the eyes
  • Itchy eyes
  • Pus-like or watery discharge
  • Swelling of the eyelid
Conjunctivitis will usually clear up within 2-14 days. If conjunctivitis is caused by a seasonal allergy, it may continue throughout the season. If it is caused by a non-seasonal allergy, it may continue to occur year round.Note: These symptoms can sometimes indicate a more serious medical problem. If you develop these or any other symptoms, see your doctor.

leave comments
Did you like this? Share with your family and friends.
Related Topics:
Current Research From Top Journals

Music May Improve Sleep Quality in Adults with Insomnia
October 2015

Insomnia can make your days miserable and a cure can be hard to find. There are some medications but there is some worry with side effects and the potential for addiction. Music is side effect free and according to this study may help you find sleep.

dot separator
previous editions

CPAP May Help Older Adults with Obstructive Sleep Apnea
September 2015

Water Before Meals May Promote Weight Loss
August 2015

Fecal Transplants Induce Ulcerative Colitis Remission
July 2015

dashed separator


Our Free Newsletter
click here to see all of our uplifting newsletters »