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What is a notable sign of potential meningitis in infants?

  1. Bulging fontanels

  2. Increased irritability

  3. No fever

  4. Reduced appetite

The correct answer is: Bulging fontanels

A bulging fontanel is a notable sign of potential meningitis in infants because it indicates increased intracranial pressure, which can occur when there is inflammation in the protective membranes surrounding the brain and spinal cord. In the context of meningitis, this increased pressure can lead to swelling, causing the fontanels—the soft spots on an infant's skull—to protrude noticeably. While increased irritability, absence of fever, and reduced appetite can also be symptoms of meningitis or other illnesses in infants, bulging fontanels are particularly distinctive. This sign directly relates to the physical state of the brain and its surrounding structures, making it a critical observation for healthcare providers in suspecting meningitis in young children. Recognizing this sign can prompt timely intervention and further evaluation, which are crucial for the health and wellbeing of the infant.