Can a Cold Cause Red Eyes?

A common cold itself typically does not cause red eyes, but red or bloodshot eyes can be associated with cold symptoms due to various factors, often indirectly related to the cold. Some of the reasons for red eyes during a cold include:

  • Eye Irritation: The common cold can lead to nasal congestion, sneezing, and increased production of mucus. This can sometimes result in eye irritation as mucus may find its way into the eyes, causing redness.
  • Allergic Reactions: Some people with colds may experience allergic reactions or have pre-existing allergies that can cause red eyes. Allergic responses to environmental factors like pollen, dust, or pet dander can be triggered by a cold or flu virus. Allergies can lead to itchy, watery, and red eyes.
  • Fatigue and Sleep Disruption: A cold can cause symptoms such as fatigue, fever, and coughing, which may disrupt sleep patterns. Lack of restful sleep can lead to bloodshot eyes and eye fatigue.
  • Medications: Over-the-counter or prescription medications taken to relieve cold symptoms can sometimes have side effects that affect the eyes. For example, some cold medications may cause dryness or blurred vision, which can lead to red eyes.
  • Conjunctivitis: Conjunctivitis, commonly referred to as “pink eye,” is an inflammation of the conjunctiva (the thin, clear membrane covering the white part of the eye). While the common cold doesn’t directly cause conjunctivitis, it’s possible to have both conditions simultaneously. Conjunctivitis can cause red, itchy, and watery eyes.

If you experience persistent or severe red eyes during a cold, it’s important to consider the potential underlying causes. If the redness is accompanied by other concerning symptoms, such as eye pain, vision changes, or discharge from the eyes, it’s advisable to consult with an eye specialist (ophthalmologist) or a healthcare professional for a proper evaluation and appropriate treatment. They can help determine the specific cause of red eyes and recommend appropriate measures to alleviate the symptoms.