What are the common causes of conjunctivitis?

What causes pink eye (conjunctivitis)?

• Viruses.
• Bacteria.
• Allergens including molds, pollen or other substances that cause allergies.
• Irritating substances, such as shampoos, cosmetics, contact lenses, dirt, smoke and especially pool chlorine.

What is the most common cause of infectious conjunctivitis?

Most frequently, conjunctivitis (and thus red eye) is caused by a bacterial or viral infection. Sexually transmitted diseases such as chlamydial infection and gonorrhea are less common causes of conjunctivitis.

Can conjunctivitis affect your throat?

Symptoms include redness in the white of the eye, eyelid swelling, itchy eyes, tearing and watery or slightly thick whitish drainage. Both eyes are usually affected. Viruses that cause pinkeye usually cause other symptoms as well, including sore throat and runny nose and are not usually treatable with medication.

Is allergic conjunctivitis unilateral?

A: Usually, allergic conjunctivitis is bilateral, meaning that it affects both eyes. It is possible that in a small number of cases, it may be unilateral, affecting only one eye. An example might be where an allergen comes into contact with just one of the eyes.

What viruses cause conjunctivitis?

The following viruses can cause viral conjunctivitis, with adenoviruses being one of the most common causes:

• Adenoviruses.
• Rubella virus.
• Rubeola (measles) virus.
• Herpesviruses, including. Herpes simplex virus.
• Picornaviruses, such as coxsackievirus A24 and enterovirus 70 (which has caused outbreaks in other countries)

What is the most common bacterial cause of eye infection?

Bacterial conjunctivitis The most common bacteria are Haemophilus influenza, Streptococcus pneumoniae and Staphylococcus aureus.

Can conjunctivitis cause swelling?

Conjunctivitis, or pinkeye, occurs when the conjunctiva of the eye becomes inflamed. The eye can become red or pink, swollen, and irritated, and there may be mucus. Infective conjunctivitis can be highly contagious.

Which conjunctivitis is unilateral?

Follicular conjunctivitis is the mildest form of a viral conjunctival infection. It has an acute onset, initially unilateral with the second eye becoming involved in a week. It presents with a watery discharge, conjunctival redness, follicular reaction and a preauricular lymphadenopathy on the affected side.

Is Covid conjunctivitis bilateral or unilateral?

Unilateral conjunctivitis as first presentation of Coronavirus Disease 2019 (COVID-19): A telemedicine diagnosis.

Is viral conjunctivitis a symptom of Covid-19?

The new coronavirus behind the pandemic causes a respiratory illness called COVID-19. Its most common symptoms are a fever, coughing, and breathing problems. Rarely, it also can cause an eye infection called conjunctivitis.