Summary
Highlights
Child development is a critical aspect of pediatrics, starting from conception and continuing into adulthood. While prenatal development is outside the scope of this video, maternal health profoundly impacts fetal and child development. Pediatricians use 'developmental milestones' to track skill acquisition, helping to support growth and recognize potential delays. Early recognition and intervention for developmental delays are crucial. Developmental surveillance involves pediatricians' observations, parental concerns, and developmental history, ideally performed at every visit. Developmental screening uses standardized measures given to parents and is recommended at 9, 18, and 24 months, with autism-specific screening at 18 and 24 months. Identifying concerns early significantly increases a child's eligibility for services like speech or occupational therapy.
A newborn infant primarily eats and sleeps. Key milestones include alerting to sound, coordinated sucking, and fixing gaze on a face. Crying is the primary form of communication, and caregivers meeting these needs foster attachment. Parents are encouraged to talk to their babies and allow them to examine faces, promoting important early development.
At two months, an infant lifts their head when prone, exhibits a social smile, tracks horizontally, and is alert for longer periods. By four months, atonic neck reflexes fade, allowing rolling from front to back. The child makes sounds, laughs, and orients to a parent's voice, bringing hands to midline and grasping toys. Caregivers should be cautious as falls become a risk. At six months, the child can sit with support, babbles with consonants, reaches for people and toys, and transfers toys between hands. All primitive reflexes should be gone; persistence is a red flag. Child-proofing the home is recommended as the child becomes more mobile.
By nine months, an infant pulls to stand and cruises, preparing for walking. They begin to say "mama" or "dada" non-specifically and use an immature pincer grasp to explore objects and self-feed. Object permanence develops, leading to emerging separation anxiety. Discussions about choking risks and separation anxiety are important for parents.
At one year, "mama" and "dada" are correctly applied, and the child forms at least one other word. Pointing with eye contact and a sound/word for desired items, known as joint attention, emerges. The child takes independent steps, uses a more developed pincer grasp, and understands simple commands with gestures. Hand preference before age one or minimal response to their name are red flags.
At 15 months, vocabulary expands to 3-6 words, and pointing serves to share interest. The child can feed themselves with a spoon, use a cup, refine walking (stoops and recovers), and scribble. Tantrums are normal expressions of independence. Red flags include no words or no pointing. By 18 months, vocabulary doubles (5-10 words) with much jargoning. The child points to label body parts and shows imitation skills, often helping around the house, stacking three blocks, and starting to run. Red flags include not pointing to show, inability to walk, not imitating, not gaining new words, or not noticing when a caregiver leaves or returns.
At two years, a child seeks independence. They combine two words into phrases (e.g., "drink milk"), have about 50 words (50% understood by others), follow two-step commands, and navigate stairs with support. They feed themselves with utensils, jump off the floor, and engage in parallel play. Drawing lines and building towers of six blocks are typical. Red flags include not using two-word phrases, not knowing the use of common objects, not imitating actions or words, not following simple instructions, unsteady walking, or losing previously acquired skills.
At three years, a child can use alternating feet on stairs, pedal a tricycle, draw circles, and build a nine-block tower or a three-block bridge. They use pronouns correctly, speak in three-word sentences (75% understood by strangers), can dress themselves (with help for shoes), brush teeth, and know their name, age, and colors. Group play, turn-taking, and imaginative play develop. Most children are toilet-trained during the day. Red flags include not playing pretend or with other children, frequent falling, no three-word phrases, and repetitive behaviors.
At four years, drawing skills include squares or crosses, and hopping on one foot is possible. They can manipulate buttons, are fully understood by strangers, answer 'what' and 'when' questions, follow game rules, and know at least four colors. Red flags include difficulties with feeding, sleep, or toileting, unclear speech, not following three-part commands, or not speaking in short sentences. By five years, children preparing for kindergarten can skip, tie shoes, draw triangles, print their name, draw a person with body parts, and know left from right. They ask 'what' and 'why' questions, follow three-step commands, know their address, birthday, and phone number, name the alphabet, and count to 10. Red flags include inability to perform basic tasks independently, difficulty attending for more than five minutes, not talking about daily activities, or extreme behaviors (fearful, aggressive, shy, or sad).
Child development is a continuous and nuanced process. Understanding these key milestones is crucial for monitoring a child's progress and identifying potential concerns early.