Which symptom suggests bacterial conjunctivitis in a child?

• A. Inflamed conjunctivae with purulent drainage and crusting of the eyelids
• B. Watery eyes with mild discharge
• C. Itching only without discharge
• D. Photophobia with clear discharge

Answer: (A)

Distinguishing bacterial conjunctivitis from other eye conditions hinges on the pattern of eye drainage. Purulent, thick drainage that crusts around the lashes or eyelids is characteristic of a bacterial infection of the conjunctiva. This crusting happens as pus accumulates and dries, especially overnight, and it often accompanies redness and irritation.

In contrast, viral conjunctivitis more commonly shows a watery or mucopurulent discharge and is frequently associated with other cold-like symptoms. Itching with little or no purulent drainage points more toward allergic conjunctivitis, which also tends to involve prominent itching rather than crusting. Photophobia with clear discharge can suggest other ocular surface issues beyond typical conjunctivitis and isn’t the classic sign of bacterial infection.

So, the presence of inflamed conjunctiva with purulent drainage and crusting aligns best with bacterial conjunctivitis, guiding the clinician toward appropriate antibiotic treatment and infection control measures.