Allergic Conjunctivitis: Causes, Symptoms, and Treatment
Medically reviewed by Sumiran Racherla, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Allergic Conjunctivitis?
An allergist (a doctor who treats allergies) can find your triggers and plan treatment. An ophthalmologist (an eye doctor) helps when the eyes are very inflamed or vision is affected. Symptoms often go away with treatment, but can persist if exposure to the allergen continues. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is Allergic Conjunctivitis?
Allergic conjunctivitis happens when the conjunctiva reacts to an allergen. The conjunctiva is the clear tissue that lines the eyelids and covers the white of the eye. Common triggers are pollen, mold spores, dust mites, and pet dander. The body releases histamine, a chemical that causes swelling. The eyes can become red, itchy, and teary very quickly. Allergic conjunctivitis is not contagious.
Symptoms
Problems usually show up in both eyes. Symptoms often include:
- Intense itching or burning eyes.
- Red eyes.
- Watery eyes or stringy discharge.
- Puffy eyelids, most often in the morning.
- Sensitivity to light.
Symptoms from pollen tend to be worse than symptoms from indoor triggers. They typically start shortly after exposure to the allergen.
Causes and who gets it
Allergies tend to run in families. Two patterns are common. Seasonal symptoms come with pollen from grasses, ragweed, and trees. Perennial symptoms happen year-round from indoor triggers like dust mites and pet dander. Some people have both. Symptoms may be worse on hot, dry, windy days, when more pollen is in the air. On cool, damp, rainy days most pollen is washed to the ground.
How doctors diagnose it
A doctor asks about your symptoms and looks at your eyes. The doctor may find small raised bumps on the inside of the eyelids. Allergy skin testing may identify the trigger. Skin testing is the most common method of allergy testing. It is more likely to be done when symptoms do not respond to treatment. If steroid eye drops are being considered, an eye doctor should check the eye first. That exam includes measuring the pressure inside the eye.
Treatment
Avoiding triggers is the best treatment. For pollen, wear a hat with a wide brim or sunglasses. Rinse the eyes with saline drops after being outdoors. For dust mites, use a vacuum with a HEPA filter and keep pets out of the bedroom. Lubricating eye drops and cool compresses ease symptoms. Over-the-counter antihistamine or decongestant eye drops can also help, but they can sometimes make your eyes dry. Do not use decongestant drops for more than 5 days, because rebound congestion can occur. Do not use medicated eye drops while wearing contact lenses.
For worse cases, doctors prescribe antihistamine eye drops or mast cell stabilizer drops. Mast cells are a type of white blood cell that causes swelling. Mild steroid eye drops can help severe reactions, but they raise the risk of glaucoma (high pressure inside the eye), cataracts, and infection. An eye doctor should manage steroid drops. Allergy shots, also called immunotherapy, can give long-term relief for some people.
When to see a doctor
Get care right away if your vision changes or if you have severe eye pain that is getting worse. Red, itchy eyes can also come from infections and other problems that can threaten eyesight. Also call your doctor if symptoms do not improve with self-care and over-the-counter treatment. Get help if the skin around the eyes becomes swollen or red.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. This doctor can review your symptoms and help you track which triggers cause problems. They can also coordinate care with an allergist or an eye doctor.
Common questions
Is allergic conjunctivitis contagious?
No. Unlike pink eye caused by an infection, allergic conjunctivitis does not spread from person to person. It starts when the immune system overreacts to a trigger.
Can allergic conjunctivitis harm my eyesight?
It poses little threat to eyesight other than temporary blurriness. In severe cases, more inflammation can rarely affect vision. See a doctor right away if your vision changes.
What eases symptoms at home?
Start by avoiding the trigger as much as possible. Cool compresses and lubricating eye drops ease symptoms. Over-the-counter antihistamine drops or pills can help too.
Do I need allergy testing?
Not always. Skin testing is the most common method and is more likely to be done when symptoms do not respond to treatment. Testing may identify the pollen or other substances that trigger your symptoms.
Sources
- MedlinePlus - Allergic conjunctivitis
- American Academy of Allergy, Asthma and Immunology - Eye (Ocular) Allergy
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
