What is a fontanelle commonly referred to in infants?

A fontanelle is commonly referred to as a soft spot on an infant's head. These areas are regions where the skull bones have not yet fused together, allowing for flexibility during childbirth and accommodating the rapid growth of the brain during the early months of life. The fontanelles are covered by a tough membrane that protects the underlying brain, and they gradually close as the child grows, typically during the first year of life. Recognizing the fontanelle is important for healthcare professionals and caregivers, as it can provide information about the infant's hydration status and overall health.