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  1. Pink eye (conjunctivitis) - Symptoms and causes - Mayo Clinic

    Jan 10, 2025 · When small blood vessels in the conjunctiva become swollen and irritated, they're more visible. This is what causes the whites of the eyes to appear reddish or pink. Pink eye also is called …

  2. Pink Eye: Causes and How It Spreads | Conjunctivitis (Pink Eye) | CDC

    Apr 15, 2024 · Learn about common causes of pink eye like viruses, bacteria, and allergens.

  3. Pink Eye (Conjunctivitis): Symptoms, Treatment & Causes

    Apr 17, 2024 · Pink eye (conjunctivitis) is a common type of eye inflammation. Infections are the most common cause. Get your eyes checked if symptoms get worse after a few days.

  4. Pink Eye (Conjunctivitis): Symptoms, Causes, Treatment - WebMD

    Apr 9, 2024 · Pink eye, also called conjunctivitis, is an infection of the eye's conjunctiva usually caused by a bacteria or virus that results in red, itchy, painful eyes.

  5. Conjunctivitis - EyeWiki

    Conjunctivitis can be divided into infectious and noninfectious causes. Allergic: the most frequent cause of conjunctivitis, affecting 15-40% of the population and is observed more frequently in the spring …

  6. Conjunctivitis: What Is Pink Eye? - American Academy of Ophthalmology

    Jul 16, 2025 · Conjunctivitis — often called pink eye — is inflammation of the conjunctiva in one or both eyes, caused by an eye infection or allergies. Pink eye can affect adults or children.

  7. What Causes Conjunctivitis? A Look at Pink Eye - Healthline

    May 12, 2025 · Conjunctivitis (pink eye) is usually caused by viral infections. Bacterial infections are also a relatively common cause.

  8. Pink Eye - National Eye Institute

    Nov 5, 2025 · Pink eye, or conjunctivitis, causes swelling and redness in the inside of your eyelid and the white part of your eye. Your eye may also feel itchy and painful. Learn more about pink eye, …

  9. Conjunctivitis: Causes, Symptoms, Diagnosis, and Treatment

    Sep 9, 2025 · Although conjunctivitis is often associated with infection, it can be triggered by a variety of causes including allergies, environmental irritants, and underlying medical conditions.

  10. Conjunctivitis (Pink Eye) – Symptoms and Causes | Penn Medicine

    Infectious conjunctivitis is usually caused by a virus or bacterial infection, is extremely contagious, and is usually associated with crusting or pus. Viruses are the most common cause of conjunctivitis. …