Final answer:
Dacryocystitis typically causes the lacrimal sac to become inflamed due to a plugged nasolacrimal duct, leading to tear accumulation, discharge, redness, and discomfort in the eye.
Step-by-step explanation:
When a person has dacryocystitis, it commonly leads to the inflammation of the lacrimal sac, which is often associated with a plugged nasolacrimal duct. The lacrimal sac is part of the tear drainage system, and when it's inflamed, it can lead to tear accumulation and discharge, causing discomfort and redness in the eye area. The condition may also present with purulent discharge from the eye, similar to that seen in bacterial conjunctivitis. Effective treatment often involves antibiotics, and in some cases, surgery may be required to relieve the obstruction. It is important to seek medical attention if dacryocystitis is suspected, as untreated infection can lead to complications.