Nasolacrimal duct obstruction
Nasolacrimal Duct Obstruction
Nasolacrimal duct obstruction (pronunciation: nay-zoh-lak-ri-muhl duhkt ob-struhk-shuhn) is a medical condition that occurs when the nasolacrimal duct, the tear duct that drains tears from the eyes to the nose, becomes blocked or fails to open properly.
Etymology
The term "nasolacrimal duct obstruction" is derived from three Latin words: "nasus" meaning nose, "lacrima" meaning tear, and "obstructio" meaning blockage.
Causes
Nasolacrimal duct obstruction can be caused by a variety of factors, including congenital abnormalities, infection, inflammation, trauma, or tumor. In some cases, the cause of the obstruction is unknown.
Symptoms
Symptoms of nasolacrimal duct obstruction include excessive tearing, mucus discharge, and recurrent eye infection or conjunctivitis. In severe cases, it can lead to painful swelling near the inside corner of the eye, known as dacryocystitis.
Treatment
Treatment for nasolacrimal duct obstruction depends on the cause and severity of the obstruction. Options may include antibiotics for infection, steroids for inflammation, or surgery to open or bypass the blocked duct.
Related Terms
- Dacryocystorhinostomy: A surgical procedure to create a new tear drain between the eye and the nose when the nasolacrimal duct is blocked.
- Dacryocystitis: Inflammation of the lacrimal sac, often due to nasolacrimal duct obstruction.
- Epiphora: Excessive tearing, often a symptom of nasolacrimal duct obstruction.
External links
- Medical encyclopedia article on Nasolacrimal duct obstruction
- Wikipedia's article - Nasolacrimal duct obstruction
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