Many wonder if crying can trigger a sinus infection due to nasal congestion and a runny nose. While the sensation might feel similar, the physiological processes are distinct. Understanding how tears interact with nasal passages and the true causes of sinus infections clarifies this common misconception.
How Tears Interact with Your Nasal Passages
Tears are produced by lacrimal glands, located above each eye. These glands continuously produce fluid that lubricates and protects the eye’s surface. Blinking spreads tears, which then collect in the inner corner.
From the inner corner, tears enter a specialized drainage system. This system begins with small openings called puncta, located near the nose. Tears then flow into tiny tubes called canaliculi, which drain into the lacrimal sac.
The lacrimal sac is near the bridge of the nose. From here, tears travel down the nasolacrimal duct (tear duct). This duct directs tears from the eye into the nasal cavity. This normal anatomical connection ensures continuous tear drainage from the eyes into the nose.
The Link Between Crying and Sinus Symptoms
When crying, lacrimal glands produce a significantly larger volume of tears. This increased production can overwhelm the nasolacrimal system’s drainage capacity. Tears may then overflow onto the face, while a substantial amount drains rapidly into the nasal cavity.
This sudden influx of fluid causes temporary nasal congestion and a runny nose. Tears mix with nasal mucus, creating a watery discharge that can feel like a cold or sinus issue. The increased fluid and crying can also lead to facial pressure, which might be mistaken for a sinus headache. These symptoms are a direct result of tear overflow and do not indicate an infection.
True Causes of Sinus Infections
Sinus infections (sinusitis) involve inflammation of the tissues lining the sinuses—air-filled spaces in the forehead, cheeks, and behind the nose. This inflammation causes symptoms like facial pain or pressure, a stuffy or runny nose, and sometimes fever. Most cases are viral, often complicating a common cold or flu.
Bacteria can also cause sinus infections, either primarily or after a viral infection weakens the sinus lining. Fungi or allergies can also trigger sinusitis. Blocked sinus openings (e.g., nasal polyps, a deviated septum, or allergy swelling) can trap mucus, allowing germs to multiply. Unlike crying’s temporary effects, a true sinus infection involves an inflammatory response to pathogens or allergens.
When to Seek Medical Attention
While crying’s nasal symptoms are temporary and resolve on their own, persistent or worsening sinus symptoms warrant medical evaluation. Consult a healthcare provider if symptoms like nasal congestion, facial pain, or a runny nose last over 10 days without improvement. A doctor’s visit is also recommended if symptoms initially improve but then worsen significantly, known as “double sickening.”
Other indicators for medical attention include a high fever lasting over three or four days, severe facial pain, or visual disturbances like swelling around the eyes. For recurrent sinus infections, a healthcare provider can identify underlying causes like allergies or structural issues. Early assessment helps determine the appropriate course and prevent complications.