Final answer:
Hyperlacrimation can be caused by corneal ulceration, conjunctivitis, dry eye syndrome, or allergic reactions, with infections like conjunctivitis and keratitis often leading to increased tearing.
Step-by-step explanation:
The cause of hyperlacrimation in a patient can be related to various eye conditions that lead to excessive tear production. Conditions such as corneal ulceration, conjunctivitis, Dry eye syndrome, and allergic reaction can all result in hyperlacrimation. Infections like conjunctivitis and keratitis, in particular, cause inflammation that may lead to increased tear production. Conjunctivitis is often associated with symptoms such as fever, watery discharge, and itchy eyes, particularly when linked to an upper respiratory infection. Keratitis, particularly herpes keratitis, causes irritation, excessive tearing, and light sensitivity, potentially resulting in corneal lesions and blindness if not treated. These conditions require prompt medical attention to prevent complications and manage symptoms effectively.