How Long Does Conjunctivitis Last?
Quick Answer
1–3 weeks depending on the type. Viral conjunctivitis clears in 7–14 days without treatment, bacterial resolves in 5–7 days with antibiotic drops, and allergic conjunctivitis persists as long as the allergen exposure continues.
Typical Duration
Quick Answer
Conjunctivitis (pink eye) typically lasts 1–3 weeks, with the exact duration depending on the underlying cause. Viral cases are the most common and resolve on their own within 7–14 days. Bacterial conjunctivitis clears faster with antibiotic treatment, usually within 5–7 days. Allergic conjunctivitis follows a different pattern entirely, lasting as long as allergen exposure continues.
Duration by Type
| Type | Typical Duration | Treatment Needed | Contagious |
|---|---|---|---|
| Viral | 7–14 days | No (supportive care) | Yes, up to 14 days |
| Bacterial | 5–7 days with antibiotics | Yes (antibiotic drops) | Yes, until 24 hrs on antibiotics |
| Allergic | Ongoing with exposure | Yes (antihistamine drops) | No |
| Chemical/irritant | 1–2 days | Flush with water | No |
Viral Conjunctivitis Timeline
Viral conjunctivitis, often caused by adenoviruses, follows a predictable course:
| Day | What to Expect |
|---|---|
| Days 1–3 | Redness, watery discharge, one eye affected |
| Days 3–5 | Peak symptoms, may spread to second eye |
| Days 5–10 | Gradual improvement begins |
| Days 10–14 | Full resolution in most cases |
| Days 14–21 | Stubborn cases may linger |
No antibiotic will speed up viral conjunctivitis. Cold compresses and artificial tears provide symptom relief during the waiting period.
Bacterial Conjunctivitis Timeline
Bacterial conjunctivitis produces thick, yellow-green discharge and often crusts the eyelids shut overnight. Common culprits include Staphylococcus aureus, Streptococcus pneumoniae, and Haemophilus influenzae.
Without treatment, mild bacterial conjunctivitis may self-resolve in 7–10 days. With antibiotic eye drops (such as erythromycin, tobramycin, or fluoroquinolones), improvement typically occurs within 24–48 hours, with full resolution in 5–7 days.
Allergic Conjunctivitis
Allergic conjunctivitis differs fundamentally from infectious types. It is not contagious and will persist as long as allergen exposure continues. Seasonal allergic conjunctivitis flares during pollen seasons and may last weeks to months. Perennial allergic conjunctivitis caused by dust mites or pet dander can be year-round.
Antihistamine eye drops (such as olopatadine or ketotifen) provide relief within 15–30 minutes and can be used daily during allergy season.
When to See a Doctor
Seek medical attention if symptoms worsen after 5–7 days, if there is significant eye pain or light sensitivity, if vision becomes blurred, or if the discharge is very thick and green. These could indicate a more serious infection or a different condition such as keratitis.
Speeding Up Recovery
- Apply cold compresses for 5–10 minutes several times daily
- Use preservative-free artificial tears for comfort
- Avoid touching or rubbing the eyes
- Replace contact lenses and eye makeup used during infection
- Wash hands frequently to prevent spreading
- Stay home from work or school while contagious (viral: until symptoms resolve; bacterial: until 24 hours after starting antibiotics)