Dacryocystitis (Tear Duct Infection)
The short answer
Dacryocystitis is an infection of the tear sac (lacrimal sac) located between the inner corner of the eye and the nose. It often develops as a complication of a blocked tear duct (nasolacrimal duct obstruction), which is common in infants. Signs include redness, swelling, and tenderness over the inner corner of the eye near the nose, along with yellow-green discharge and tearing. Dacryocystitis requires prompt medical treatment with antibiotics, as the infection can spread to surrounding tissues.
By Age
What to expect by age
About 6-20% of newborns have a blocked tear duct, and a small percentage of these develop dacryocystitis. Signs include a firm, tender, red swelling between the inner corner of the eye and the nose. This is different from simple blocked tear duct symptoms (watery eyes and mild discharge). Acute dacryocystitis in newborns (dacryocystitis of the newborn or dacryocystocele) may present as a bluish swelling at birth and needs prompt evaluation.
If a blocked tear duct has not resolved and becomes infected, dacryocystitis can develop. Treatment typically includes oral antibiotics and warm compresses. Gentle lacrimal sac massage (Crigler massage) may help promote drainage. If the infection is severe or does not respond to antibiotics, the baby may need hospitalization for intravenous antibiotics.
If a blocked tear duct persists and recurrent dacryocystitis occurs, a probing procedure to open the blocked duct may be recommended, typically performed between 6 and 12 months of age. The probing is done under brief anesthesia and has a high success rate (about 90%). This prevents future episodes of dacryocystitis.
If probing has not been performed and the blocked duct persists, the risk of recurrent dacryocystitis continues. After age 12 months, the success rate of simple probing decreases, and more advanced procedures such as balloon dacryoplasty or silicone tube intubation may be needed. Chronic or recurrent dacryocystitis should be managed by a pediatric ophthalmologist.
What Should You Do?
When to take action
- Your baby has mild tearing and occasional clear mucus from a blocked tear duct without redness or swelling
- Gentle tear duct massage and warm compresses are keeping symptoms manageable
- The blocked tear duct symptoms are improving on their own over time
- Your baby's eye has mild crusting in the morning but the area is not red, warm, or swollen
- Discharge from the eye has become yellow or green and thicker than before
- You notice persistent redness at the inner corner of the eye near the nose
- The blocked tear duct has not resolved by 6 months and you want to discuss probing
- There is a red, firm, tender swelling between the inner corner of the eye and the nose, as this indicates acute dacryocystitis requiring prompt antibiotic treatment
- The swelling is spreading to the eyelid, cheek, or forehead, or your baby has a fever, which could indicate the infection is spreading and may require urgent care or hospitalization
Sources
Related Resources
Related Medical Concerns
My Baby's Head Shape Looks Abnormal
Many babies develop temporary head shape irregularities that are completely normal. A cone-shaped head from vaginal delivery reshapes within days. Mild positional flattening (plagiocephaly) from sleeping on the back is very common and usually improves with repositioning and tummy time. However, head shape changes involving ridges, a persistently bulging fontanelle, or rapid head growth changes should be evaluated to rule out craniosynostosis.
Achondroplasia (Dwarfism) in Babies
Achondroplasia is the most common form of short-limbed dwarfism, affecting about 1 in 15,000 to 40,000 births. It is caused by a mutation in the FGFR3 gene and is usually apparent at birth with characteristic features including short limbs, a larger head, and a prominent forehead. Intelligence is normal. With monitoring for specific complications and supportive care, children with achondroplasia lead full, active, and independent lives.
Adenoid Hypertrophy and Breathing
Adenoids are lymphoid tissue located behind the nose that help fight infection in young children. When adenoids become enlarged (adenoid hypertrophy), they can block the nasal airway, causing chronic mouth breathing, snoring, nasal speech, and sleep-disordered breathing. Enlarged adenoids are most common between ages 2-7 and are a leading cause of obstructive sleep apnea in young children. Treatment ranges from watchful waiting and nasal steroids to surgical removal (adenoidectomy) if breathing or sleep is significantly affected.
Air Quality and Baby Health
Babies and young children are more vulnerable to air pollution than adults because they breathe faster, their lungs are still developing, and they spend more time close to the ground where some pollutants concentrate. The EPA recommends keeping babies indoors when the Air Quality Index (AQI) exceeds 100 (orange level). During wildfire smoke events, keep windows closed, use air purifiers with HEPA filters, and monitor your child for coughing, wheezing, or difficulty breathing. Long-term exposure to air pollution can affect lung development.
Altitude Sickness in Babies
Babies and toddlers can experience altitude sickness when traveling above 5,000-8,000 feet (1,500-2,500 meters). Symptoms are harder to recognize in infants because they cannot describe how they feel. Watch for unusual fussiness, poor feeding, disrupted sleep, vomiting, and fast breathing. Gradual ascent is the best prevention. Most pediatricians recommend avoiding sleeping at very high altitudes (above 8,000 feet) with infants when possible, and descending immediately if symptoms appear.
Amblyopia (Lazy Eye) Treatment Timing
Amblyopia (lazy eye) is the most common cause of vision loss in children, affecting 2-3% of the population. It occurs when one eye develops weaker vision because the brain favors the other eye. Early detection and treatment are critical because the visual system is most responsive to treatment during early childhood. Treatment is most effective when started before age 7, though improvement is possible at older ages. Treatment options include patching the stronger eye, atropine eye drops, glasses, or a combination.