What should you know about conjunctivitis in measles?

Measles may cause red, watery eyes and sensitivity to light as part of a broader illness. A person may also have fever, cough, a runny nose and a spreading rash. Eye discharge can occur, but these symptoms do not by themselves confirm measles; other infections can look similar. A healthcare professional considers the whole pattern and possible exposure.

Measles can spread readily through the air. Keep the person away from shared waiting areas and people at higher risk until medical advice has been obtained. Call ahead before attending a clinic so staff can advise on safe arrangements.

Contact a healthcare professional promptly and describe fever, rash, cough, eye symptoms, vaccination history if known, and any possible exposure. Rest, offer fluids, and use clean hands before touching the eyes. A cool clean cloth may ease discomfort. Avoid rubbing the eyes and do not share towels, pillows, cosmetics or eye medicines.

Do not start antibiotics unless prescribed for a diagnosed bacterial problem; they do not treat measles itself. Follow local public-health and clinical instructions about isolation, household contacts and vaccination advice.

Seek urgent medical care for difficulty breathing, severe drowsiness, confusion, inability to drink, signs of dehydration, seizures, severe eye pain, a cloudy eye, or reduced vision. Strong light sensitivity or rapidly worsening eye swelling also needs prompt assessment. Infants, pregnant people and anyone with a weakened immune system should receive early clinical advice after suspected exposure or symptoms.

Ask whether the illness needs testing or public-health notification, how long to avoid close contact, and how to protect household members. Ask which eye-care measures are suitable, whether any prescribed medicine is needed, and which symptoms should send you to emergency care.