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Home > Health Library > Pinkeye
Pinkeye (also called conjunctivitis) is redness and swelling of the conjunctiva, the mucous membrane that lines the eyelid and eye surface. The lining of the eye is usually clear. If irritation or infection occurs, the lining becomes red and swollen. See pictures of a normal eye and an eye with conjunctivitis.
Pinkeye is very common. It usually is not serious and goes away in 7 to 10 days without medical treatment.
Most cases of pinkeye are caused by:
Viral and bacterial pinkeye are contagious and spread very easily. Since most pinkeye is caused by viruses for which there is usually no medical treatment, preventing its spread is important. Poor hand-washing is the main cause of the spread of pinkeye. Sharing an object, such as a washcloth or towel, with a person who has pinkeye can spread the infection. For more information, see Prevention.
Viral pinkeye is often caused by an adenovirus, which is a common respiratory virus that can also cause a sore throat or upper respiratory infection. The herpes virus can also cause viral pinkeye.
Symptoms of viral pinkeye include:
Viral pinkeye symptoms usually last 5 to 7 days but may last up to 3 weeks and can become ongoing or chronic.
Pinkeye may be more serious if you:
If the pinkeye is caused by a virus, the person can usually return to day care, school, or work when symptoms begin to improve, typically in 3 to 5 days. Medicines are not usually used to treat viral pinkeye, so it is important to prevent the spread of the infection. Pinkeye caused by a herpes virus, which is rare, can be treated with an antiviral medicine. Home treatment of viral pinkeye symptoms can help you feel more comfortable while the infection goes away.
An infection may develop when bacteria enter the eye or the area around the eye. Some common infections that cause pinkeye include:
Symptoms of bacterial pinkeye include:
Bacterial pinkeye may cause more drainage than viral pinkeye. Bacterial infections usually last 7 to 10 days without antibiotic treatment and 2 to 4 days with antibiotic treatment. The person can usually return to day care, school, or work 24 hours after an antibiotic has been started if symptoms have improved. Prescription antibiotic treatment usually kills the bacteria that cause pinkeye.
Red eye is a more general term that includes not only pinkeye but also many other problems that cause redness on or around the eye, not just the lining. Pinkeye is the main cause of red eye. Red eye has other causes, including:
Swollen, red eyelids may also be caused by styes, a lump called a chalazion, inflammation of the eyelid (blepharitis), or lack of tears (dry eyes). For more information, see the topics Styes and Chalazia and Eyelid Problems (Blepharitis).
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Certain health conditions and medicines weaken the immune system's ability to fight off infection and illness. Some examples in children are:
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Home treatment for pinkeye will help reduce your pain and keep your eye free of drainage. If you wear contacts, remove them and wear glasses until your symptoms have gone away completely. Thoroughly clean your contacts and storage case.
Cold compresses or warm compresses (whichever feels best) can be used. If an allergy is the problem, a cool compress may feel better. If the pinkeye is caused by an infection, then a warm, moist compress may soothe your eye and help reduce redness and swelling. Warm, moist compresses can spread infection from one eye to the other. Use a different compress for each eye, and use a clean compress for each application.
When cleaning your eye, wipe from the inside (next to the nose) toward the outside. Use a clean surface for each wipe so that drainage being cleaned away is not rubbed back across the eye. If tissues or wipes are used, make sure they are put in the trash and are not allowed to sit around. If washcloths are used to clean the eye, put them in the laundry right away so that no one else picks them up or uses them. After wiping your eye, wash your hands to prevent the pinkeye from spreading.
After pinkeye has been diagnosed:
For pinkeye related to allergies, antihistamines, such as loratadine (Claritin) or cetirizine (Zyrtec), may help relieve your symptoms. Don't give antihistamines to your child unless you've checked with the doctor first.
Call your doctor if any of the following occur during home treatment:
If you wear contacts, be sure to remove your contacts when your eye problem starts.
Pinkeye is spread through contact with the eye drainage, which contains the virus or bacteria that caused the pinkeye. Touching an infected eye leaves drainage on your hand. If you touch your other eye or an object when you have drainage on your hand, the virus or bacteria can be spread.
The following tips help prevent the spread of pinkeye.
To prepare for your appointment, see the topicMaking the Most of Your Appointment.
You can help your doctor diagnose and treat your condition by being prepared to answer the following questions:
Current as of: June 26, 2019
Author: Healthwise StaffMedical Review: William H. Blahd Jr. MD, FACEP - Emergency MedicineKathleen Romito MD - Family MedicineAdam Husney MD - Family Medicine
Current as of: June 26, 2019
Author: Healthwise Staff
Medical Review:William H. Blahd Jr. MD, FACEP - Emergency Medicine & Kathleen Romito MD - Family Medicine & Adam Husney MD - Family Medicine
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