Lacrimation - Causes, Treatment & When to See a Doctor

What is Lacrimation?

Lacrimation is the medical term for the production and secretion of tears from the lacrimal glands. While the eyes normally produce a thin film of tears to keep the surface moist, protect against infection, and clear irritants, excessive or abnormal tearing is often referred to as “watering eyes,” “epiphora,” or simply “lacrimation.”

In healthy individuals, the tear film is composed of three layers—oil, water, and mucus—that together maintain visual clarity and comfort. When this balance is disturbed, tears may overflow onto the cheek, cause crusting, or lead to watery discharge that interferes with daily activities.

Understanding why lacrimation occurs requires looking at the underlying cause, which can range from a minor irritant to a serious systemic disease.

Common Causes

Below are the most frequently encountered conditions that provoke abnormal lacrimation. Each can affect one eye or both, and many have overlapping symptoms.

• Allergic Conjunctivitis – Seasonal or perennial allergies cause histamine release, leading to itching, redness, and watery eyes.
• Dry Eye Syndrome (Keratoconjunctivitis Sicca) – Paradoxically, insufficient tear production triggers reflex tearing.
• Blocked Lacrimal Drainage (Nasolacrimal Duct Obstruction) – Congestion or scar tissue prevents tears from draining into the nose.
• Infectious Conjunctivitis – Bacterial, viral (adenovirus), or fungal infections increase tear production as part of the inflammatory response.
• Blepharitis – Inflammation of the eyelid margins creates crusting and excess tearing.
• Foreign Body or Irritant – Dust, smoke, wind, or chemicals stimulate a protective tear reflex.
• Contact Lens Wear – Poor fit, deposits, or overwearing can irritate the ocular surface.
• Eye Surgery or Trauma – Post‑operative inflammation or injury often leads to temporary excess tearing.
• Systemic diseases – Conditions such as Sjögren’s syndrome, rheumatoid arthritis, or thyroid eye disease can affect tear production and drainage.
• Neurologic disorders – Facial nerve palsy (Bell’s palsy) or lesions affecting the nasolacrimal pathway may cause abnormal lacrimation.

Associated Symptoms

When lacrimation is present, patients often notice other ocular or systemic clues that help pinpoint the cause.

• Itching or burning sensation
• Redness (hyperemia) of the conjunctiva
• Blurred vision that improves after blinking
• Gritty feeling or sensation of a foreign body
• Crusting or discharge on the eyelid margins, especially upon waking
• Swollen eyelids (edema)
• Sensitivity to light (photophobia)
• Associated nasal symptoms (sneezing, runny nose) in allergic cases
• Pain around the eyes or forehead (common with sinusitis or orbital cellulitis)
• Systemic signs such as fever, joint pain, or dry mouth (suggesting autoimmune disease)

When to See a Doctor

Most causes of lacrimation are benign and improve with simple measures, but certain scenarios warrant prompt medical evaluation.

• Persistent tearing for more than two weeks without clear improvement.
• Severe eye pain, especially if it is sudden or worsening.
• Noticeable swelling, redness, or warmth around the eye that spreads to the cheek.
• Vision changes (double vision, sudden blurriness, or loss of vision).
• Discharge that is thick, colored (green, yellow, or pus‑like), or foul‑smelling.
• History of trauma, recent eye surgery, or contact‑lens wear with new symptoms.
• Signs of systemic disease (fever, joint swelling, dry mouth, or unexplained weight loss).
• Children under 2 years with excessive tearing plus fever or irritability.

Diagnosis

Evaluation begins with a thorough history and physical exam, followed by targeted tests when needed.

Clinical History

• Onset, duration, and pattern of tearing.
• Exposure to allergens, chemicals, or recent infections.
• Contact‑lens use, cosmetic products, or eye‑drop medications.
• Associated systemic symptoms (dry mouth, joint pain, etc.).

Physical Examination

• Visual acuity testing.
• External inspection of eyelids, lashes, and conjunctiva.
• Fluorescein staining to detect corneal abrasions or dry‑eye changes.
• Evaluation of lacrimal drainage with the fluorescein dye disappearance test or lacrimal syringing.
• Palpation of the nasolacrimal sac for tenderness or blockage.

Diagnostic Tests

• Laboratory work‑up – CBC, ESR/CRP, and autoimmune panels (ANA, RF, anti‑SSA/SSB) if an autoimmune cause is suspected.
• Allergy testing – Skin prick or specific IgE blood tests for seasonal/pollen allergens.
• Imaging – CT or MRI of the orbit/sinuses when tumor, cellulitis, or sinus disease is in the differential.
• Microbiology – Swab of discharge for bacterial culture if infection is suspected.

Treatment Options

Therapy is directed at the underlying cause. Below are the most common approaches.

General Measures

• Avoid known irritants (smoke, wind, strong fragrances).
• Apply a warm compress for 5–10 minutes 2–3 times daily to relieve blepharitis or duct obstruction.
• Maintain eyelid hygiene: gentle scrubbing with diluted baby shampoo or commercial lid wipes.
• Replace old eye‑makeup and clean contact lenses according to manufacturer instructions.

Medication‑Based Treatments

• Antihistamine eye drops or oral antihistamines – First‑line for allergic conjunctivitis (e.g., olopatadine, ketotifen).
• Artificial tears – Preserve the tear film in dry‑eye related lacrimation; preservative‑free formulations are preferred.
• Topical antibiotics – For bacterial conjunctivitis (e.g., erythromycin ointment, fluoroquinolone drops).
• Topical steroids – Short‑course use for severe inflammatory cases under physician supervision.
• Lacrimal duct probing or silicone intubation – Performed by an ophthalmologist for persistent nasolacrimal obstruction.
• Systemic immunosuppressants – In autoimmune diseases such as Sjögren’s or rheumatoid arthritis (e.g., hydroxychloroquine, methotrexate).

Surgical Options

• Dacryocystorhinostomy (DCR) – Creates a new drainage pathway for chronic duct blockages.
• Punctal Plugs – Small devices inserted into tear‑drainage openings to retain tears in dry‑eye patients; can be reversed if needed.
• Blepharoplasty – Corrects eyelid malpositions that contribute to tear overflow.

Prevention Tips

While not all causes are avoidable, many strategies can reduce the frequency or severity of lacrimation.

• Identify and limit exposure to personal allergens; use air filters and keep windows closed during high pollen counts.
• Practice good eyelid hygiene, especially if you have blepharitis or rosacea.
• Stay hydrated and use humidifiers in dry climates to support tear film stability.
• Follow proper contact‑lens care: replace lenses as scheduled, clean case regularly, and avoid overnight wear unless approved.
• Remove eye makeup before bed and replace cosmetics every 3–6 months.
• Wear protective eyewear when working with chemicals, chopping wood, or in windy environments.
• Schedule regular eye exams, especially if you have systemic autoimmune conditions or a history of eye infections.

Emergency Warning Signs

Understanding the reasons behind lacrimation helps you decide when simple home care is enough and when professional evaluation is essential. If you notice persistent tearing or any of the red‑flag symptoms listed above, schedule an appointment with an eye‑care professional promptly.

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Sources: Mayo Clinic, American Academy of Ophthalmology, CDC – Allergy and Asthma, National Institute of Health (NIH) – Dry Eye Research, Cleveland Clinic, World Health Organization (WHO) ophthalmology guidelines.