The redness and swelling of the patient’s lacrimal caruncle may be a symptom of certain diseases, such as conjunctivitis, dacryocystitis, allergy, etc. The patient should consult the doctor in time to find out the cause of the disease. 1. Conjunctivitis: the patient’s conjunctival tissues are exposed to a variety of external factors, infection, physical and chemical stimuli, allergic reactions, inflammation of neighboring tissues can lead to conjunctival inflammation. Patients may have redness and swelling of the eyes, foreign body sensation, burning sensation, increased secretion, itchy eyes, photophobia, tearing and other uncomfortable symptoms, and when it affects the lacrimal caruncle, it may lead to enlargement of the lacrimal caruncle of the patient. 2. Dacryocystitis: Inflammation of the lacrimal sac caused by obstruction or narrowing of the nasolacrimal duct, nasal and ocular infections, systemic infections, etc., the patient may have tear overflow, swelling of the lacrimal sac area, pressure and pain and other uncomfortable symptoms. 3. Eye allergy: if the patient’s eyes are itchy and redness and swelling of the lacrimal caruncle occurs after rubbing the eyes with the hand, it may be caused by eye contact with allergens, and the patient may be accompanied by nasal congestion, sneezing and other uncomfortable symptoms. It is recommended that patients with red and swollen tear troughs consult a doctor in time to assess their condition and follow the doctor’s instructions for treatment.