A child developmental delay happens when a child is slow to reach one or more developmental milestones compared to other children the same age. About 1 in 6 children in the United States has at least one developmental delay, according to the Centers for Disease Control and Prevention. A delay affects more than the child alone. It shapes daily routines, the kind of care a household provides, and the appointments and services a family arranges over time.
Child Developmental Delays
A child developmental delay means a child is continually behind in developing skills expected by a certain age. It is not the same as a child simply reaching a milestone a little later than a general trend. Children develop at different rates, so being slightly behind does not always signal a problem.
Milestones mark these stages. Examples include rolling over, pulling up to stand, waving “bye-bye,” taking a first step, and speaking a first word such as “dada.” When a significant delay affects two or more areas, providers may refer to it as developmental delay.
Some delays occur as a result of genetic factors, such as Down syndrome or fragile X syndrome. Others link to environmental factors. Risk factors include premature birth, low birth weight, not enough oxygen at birth, poor nutrition, exposure to toxins before or after birth, and certain health conditions such as chronic ear infections. A family history of speech or developmental delays may also raise the chance of a delay.
How They’re Diagnosed
Healthcare providers use developmental screening to tell if a child is learning basic skills on schedule. During an exam, a provider may talk and play with the child to see how the child learns, speaks, behaves, and moves. The provider may also ask the parent questions or give a questionnaire to complete.
There is no lab or blood test that confirms a developmental delay. However, tests exist for specific syndromes and disorders that cause delays, and a provider will advise whether any are needed. Records of the child’s firsts (first babbling, first words, and first sentences) help the provider build an accurate picture.
How They’re Treated
Treatment depends on the area affected and any underlying cause. A provider may refer a child to one or more specialists. These can include a hearing specialist, a speech therapist, a developmental pediatrician, a neurologist, or a provider of early intervention services.
Early intervention services support infants and toddlers with delays in talking, thinking, playing, or moving. A child found eligible receives an Individualized Family Service Plan built around the needs of the child and the family. Services may include speech or language therapy, physical therapy, occupational therapy, hearing services, nutrition services, and family counseling and training.
Most delays resolve over time. With early intervention, many children catch up to their peers. Research shows that services for children up to age three can reduce and often prevent long-term effects.
Get Family Care
If you suspect your child has a developmental delay, reach out to their healthcare provider as soon as possible. Start by sharing a record of your child’s milestones, including when they first babbled, spoke, or walked. Ask about developmental screening and whether a referral to a specialist makes sense.
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