Read below about swelling of one eye, including causes and common questions. Or get a personalized analysis of your swelling of one eye from our A.I. health assistant. At Buoy, we build tools that help you know what’s wrong right now and how to get the right care.

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A.I. Health Assistant Causes for Swelling of One Eye

The list below shows results from the use of our A.I. Health Assistant by Buoy users who experienced swelling of one eye. This list does not constitute medical advice.

  1. 1.Stye and Chalazion

    A stye (or hordeolum) is an infection in the upper or lower eyelid. There are three glands around the eye and one of them is infected.

    If left untreated, the stye generally heals in 1-2 weeks.

    Rarity:
    Common
    Top Symptoms:
    swelling of one eyelid, redness around the eye, feeling of something in the eye, eyelid lump, eyelid pain
    Symptoms that always occur with stye and chalazion:
    swelling of one eyelid
    Symptoms that never occur with stye and chalazion:
    fever
    Urgency:
    Self-treatment
  2. 2.Irritated Eye Causing Swelling

    Chemosis is a sign of eye irritation. The outer surface of the eye can look like a blister, filled with water or fluid. It can occur from infection or allergies, or as in this case, from rubbing the eye.

    Within a day

    Rarity:
    Ultra rare
    Top Symptoms:
    swelling of the eye area, eye itch, eye redness, swollen whites of eyes
    Symptoms that always occur with irritated eye causing swelling:
    swelling of the eye area
    Urgency:
    Phone call or in-person visit
  3. 3.Shingles (Herpes Zoster)

    Shingles (herpes zoster) is a disease caused by the varicella-zoster virus - the same virus that causes chickenpox. Early signs of shingles include burning or shooting pain and tingling or itching, usually on one side of the body or face. Rashes or blisters appear anywhere from one to 14 days later. If shingles appears on the face, it may affect vision or hearing.

    An episode usually lasts 2-4 weeks.

    Rarity:
    Common
    Top Symptoms:
    symptoms of infection, dizziness, fatigue, rash, diarrhea
    Symptoms that always occur with shingles (herpes zoster):
    grouped rash, rash
    Urgency:
    Primary care doctor

    Swelling of One Eye Checker

    Take a quiz to find out why you’re having swelling of one eye.

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  4. 4.Orbital Cellulitis

    Orbital cellulitis is a serious infection of the bony cavity (the orbit) which holds the eyeball. This condition affects the eye, eyelids, eyebrows, and cheeks, and causes the eyeball to have a swollen appearance. It can cause blindness if the infection is not treated.

    Antibiotic treatment for 3 weeks.

    Rarity:
    Ultra rare
    Top Symptoms:
    fever, blurry vision, swelling of one eye, swelling of one eyelid, eye skin changes
    Symptoms that always occur with orbital cellulitis:
    eye skin changes, blurry vision
    Urgency:
    Hospital emergency room
  5. 5.New - Onset Seasonal Allergies

    Allergic rhinitis, is an overreaction by the immune system to allergens in the air. While pollen often causes allergies, other culprits include dust, animal dander, and mold.

    Allergies are often seasonal.

    Rarity:
    Common
    Top Symptoms:
    sore throat, congestion, cough with dry or watery sputum, mucous dripping in the back of the throat, fatigue
    Symptoms that never occur with new-onset seasonal allergies:
    fever, yellow-green runny nose, chills, muscle aches
    Urgency:
    Self-treatment
  6. 6.Inflamed Eyelid (Blepharitis)

    Blepharitis is an eyelid issue where the skin, lashes, or glands become inflamed from an irritant or infection.

    Treatment and preventative measures may successfully control blepharitis.

    Rarity:
    Common
    Top Symptoms:
    eye itch, sensitivity to light, eye redness, feeling of something in the eye, dry eyes
    Symptoms that never occur with inflamed eyelid (blepharitis):
    severe eye pain
    Urgency:
    Self-treatment
  7. 7.Contact Lens - Related Eye Infection

    Millions of people wear contact lens daily without issue; however, there is a risk of infection. Often, infection is avoidable by keeping lenses clean.

    Recovery depends on type of infection.

    Rarity:
    Rare
    Top Symptoms:
    eye redness, wateriness in both eyes, sensitivity to light, constant eye redness, eye redness
    Symptoms that always occur with contact lens-related eye infection:
    eye redness, constant eye redness
    Urgency:
    In-person visit

Questions Your Doctor May Ask About Swelling of One Eye

  • Q.Any fever today or during the last week?
  • Q.Where in your eye area is this swelling?
  • Q.Do you feel like there is something in your eye?
  • Q.Are you experiencing chills?

If you've answered yes to one or more of these questions, try our swelling of one eye symptom checker to find out more.

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Swelling of One Eye Symptom Checker Statistics

  • People who have experienced swelling of one eye have also experienced:

    • 6% Pain in One Eye
    • 4% Headache
    • 4% Eye Pain
  • People who have experienced swelling of one eye had symptoms persist for:

    • 43% Less Than a Day
    • 38% Less Than a Week
    • 8% Over a Month
  • People who have experienced swelling of one eye were most often matched with:

    • 57% Shingles (Herpes Zoster)
    • 28% Irritated Eye Causing Swelling
    • 14% Stye and Chalazion
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

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