Developmental Milestones Ages 2 Months to 5 Years | OT Study Guide

Early recognition of developmental conditions relies on identifying specific red flags. For autism spectrum disorder: no big smiles by 6 months, no reciprocal sharing by 9 months, no response to name by 12 months, no babbling/gestures by 12 months, no meaningful words by 16 months, no two-word phrases by 24 months, or any skill regression. For cerebral palsy: high-risk history (preterm birth, perinatal complications), delayed motor milestones, abnormal tone/stiffness/weakness, asymmetric movements, or early hand dominance before 18 months. High-risk infants require monitoring every three months during the first year.

Developmental milestones and red flags: smile by 2 months, sit by 4-12 months, walk by 8-18 months, speak first words by 8-24 months, speak in phrases by 24 months. Red flags by age: 3 months (poor visual tracking, no vocalization, no smiling, no head control), 6 months (no babbling, no voluntary movement), 9 months (no pincer grasp), 12 months (no sitting, no standing), 18 months (no walking, no words), 24 months (no running, no two-word phrases). Universal red flags: abnormal tone, abnormal reflexes, delayed milestones, involuntary movements. Phenotypic examination includes: skin inspection for dysmorphic features, head circumference, fontanelle assessment, eye examination (strabismus, cataracts), ear examination (dysplasia), nasal anomalies, limb anomalies, hepatomegaly, hypogonadism, and sensory evaluation. Cerebral palsy is a disorder of tone, movement, and posture from non-progressive brain lesions during prenatal, perinatal, or early postnatal periods. Etiology: prenatal (infections, prematurity, asphyxia, Rh incompatibility, malformations), perinatal (birth complications), postnatal (meningitis, trauma). Acquired cerebral palsy constitutes only 10% of cases.

Children present with developmental problems through three patterns: delayed (development younger than expected), asynchronous (some areas develop differently), or atypical (uncommon for any developmental stage). Clinical diagnoses include global developmental delays, intellectual disability, speech disorders, cerebral palsy, and autism spectrum disorder. Etiologic diagnosis identifies underlying causes like Down syndrome, fragile X, chromosome 7q31 deletions causing apraxia, and hereditary cerebral palsy. Microarray testing for autism often reveals deletions like 16p11.2 explaining the condition.

Red flags in development include: social-emotional concerns (lack of eye contact, trouble socializing, not responding to name), speech and language issues (limited verbal abilities, trouble pronouncing words, difficulty with simple instructions), and physical motor concerns (clumsiness, fear of slides). Red flags should be observed consistently across multiple settings (school and home) over time, not just one or two days. Autism Spectrum Disorder (ASD) is a neurodevelopmental condition characterized by difficulties in social interactions and communication, not by physical appearance or motor skills. Children with ASD often have normal or excellent physical abilities. Parents should seek professional diagnosis if they observe concerning behaviors and have the right to seek a second opinion if uncomfortable with the diagnosis.

Developmental disorders can be categorized into three types: (1) Global developmental delay - a child fails to meet milestones across all areas (e.g., a 2-year-old who cannot sit, walk, or speak); (2) Developmental dissociation - a child develops normally in some areas but has delays in others (e.g., normal motor development but delayed speech); (3) Developmental deviation - a child meets milestones but in an unusual sequence or pattern (e.g., recognizing all letters at 24 months but not saying 'mama'). Understanding these patterns is crucial for proper diagnosis and intervention planning.

This section covers sensory diet implementation, play as the foundation of occupational therapy, and family-centered practice. A sensory diet is a personalized plan of sensory activities to help children maintain regulation throughout the day. Key principles: (1) Children need sensory input every 2 hours to maintain regulation; (2) Activities should be embedded in daily routines (before school, after school, during transitions); (3) Activities should be meaningful and enjoyable; (4) The sensory diet should be individualized based on the child's sensory profile; (5) Family and school must understand the purpose and implementation of the sensory diet. Effective implementation includes: (1) Movement breaks (40% increase in on-task behavior); (2) Sensory tools (gymnastic balls, fidgets) for regulation; (3) Advance notification for transitions; (4) Visual schedules to help children anticipate changes. Play is not merely a tool but the purpose of occupational therapy. Developmental milestones for play include: (1) Sensorimotor play (0-2 years); (2) Pretend play (2-3 years); (3) Functional play (3-6 years); (4) Rule-based play (6+ years). Environmental factors significantly impact children's play and participation: (1) Playground design should accommodate different age groups and sensory needs; (2) Urban environments with limited green spaces disadvantage children with sensory processing difficulties; (3) Access to natural environments provides rich sensory experiences; (4) Community resources can support participation. Effective intervention requires: (1) Mediated learning - pairing children with more skilled peers; (2) Family coaching - training parents to support their child's development; (3) Environmental modification; (4) Cultural sensitivity. Family coaching has been shown to double the effectiveness of therapy and reduce parental stress.

Pediatric OTs work with children and young people from premature babies up to 19 years who have difficulty participating in things they want, need, and like to do due to physical, developmental, or learning delays, sensory or mental health needs, illness or injury, challenging family circumstances, environmental challenges, or developmental changes. Client groups include children with cerebral palsy (lifelong condition from brain damage before birth or infancy), neuromuscular conditions (nerve and muscle problems causing sensations, pain, fatigue), genetic conditions like Down syndrome, children injured in hospital or having operations, children undergoing cancer treatment, preschool children with autism, children with sensory processing differences, and children with minor motor coordination difficulties. Interventions include helping with posture stability, muscle tone, strength, practicing skills, learning new skills, fastening buttons, getting dressed, self-care activities, school activities (handwriting, fine motor skills, scissors use, focusing, organizing school days), and play and leisure (gross motor skills, ball skills, PE, sports participation). Issues in any area can impact confidence and social skills.

For children, occupational therapy considers play and school performance as primary occupations. Children with compromised play and educational performance receive interventions using play as both means and objective. Therapists use standardized assessment instruments to build treatment plans. A case study demonstrates this approach: a child with encephalitis sequelae and autism diagnosis was initially dependent on her mother for daily activities. The therapist assessed her existing skills, then worked on upper body strength, cognitive understanding of self-feeding, and sensory integration. Using adaptive technology (thickened utensils), the child achieved greater independence in self-feeding, with ongoing collaboration with speech-language pathology for oral motor skills.

Play is the primary occupation of childhood and is neurobiologically significant for developing motor, cognitive, sensory, and socialization skills. If a child cannot play properly, it can have significant developmental repercussions. Feeding problems are complex and involve cognitive, motor, and sensory variables. OT professionals use play-based approaches to help children develop positive relationships with food, including sensory activities and oral motor exercises. The approach includes regulation activities before addressing feeding, using play to transform disfunctional relationships with food into positive ones.

This section covers sensory processing differences, play development, and environmental modifications for autism intervention. Children with autism may be hypersensitive or hyposensitive across different sensory systems (tactile, vestibular, auditory). Strategies include proprioceptive input (weighted blankets, car games, jumping), respecting tactile preferences without forcing exposure, and using sensory boxes and therapeutic equipment. Play development progresses through sensorimotor, symbolic/pretend, games with rules, and abstract games. Children with autism may have play disabilities related to sensory processing differences. Environmental modifications include color-coded zones to support spatial organization and reduce confusion. Understanding the child's play stage helps recommend appropriate activities and plan for progression.

This section details the Early On (Part C) process for children birth to 3 years. After referral, a service coordinator must be appointed, and a notice for evaluation consent must be sent within 10 calendar days. The Individualized Family Service Plan (IFSP) is written specifically for the child's and family's unique needs, focusing on family outcomes and desired changes. The plan details who provides services, where, when, how often, and what services will be provided. It is a living document that can be changed as needs change. Build Up Michigan provides IDEA-funded support for preschool-age children (3-5 years).

Howard County Public School System provides free early intervention services for children ages birth to 5 through two distinct programs: the Infants and Toddlers Program (ages 0-34.5 months) under Part C of IDEA, which uses Individualized Family Service Plans (IFSP) and provides services in the child's natural environment, and the Special Education Preschool Program (ages 3-5) under Part B of IDEA, which uses Individualized Education Programs (IEP) and follows the school calendar. Eligibility for infants and toddlers requires a 25% delay in one or more developmental areas (language, gross motor, fine motor, adaptive skills, or cognition), while special education eligibility includes specific educational disabilities or developmental delay. The process involves referral, screening, assessment, eligibility determination, and service development, with IFSPs developed within 45 days and IEPs within 90 days of referral.

An Individualized Family Service Plan (IFSP) is a legally mandated document created for children aged 0-3 with developmental delays or disabilities under Part C of the Individuals with Disabilities Education Act; it is developed collaboratively by an IFSP team including parents, service providers, and specialists, and outlines coordinated early intervention services tailored to the child's specific needs, delivered in natural environments like the home, with a service coordinator managing the plan and services covered by the Early Start program or insurance.

The Individualized Family Service Plan (IFSP) is a written roadmap for providing early intervention services to infants and toddlers with disabilities (ages birth-2) under Missouri's First Steps program, which meets IDEA Part C requirements; it is developed jointly by the family and qualified personnel, includes child's present level of development, family concerns and priorities, measurable outcomes with timelines, specific services in natural environments, and transition planning, with meetings held within 45 days of eligibility determination and reviewed every six months, requiring parental consent for services and providing parents with procedural safeguards to advocate effectively for their children.

An IFSP (Infant and Family Service Plan) is an early intervention program designed for infants and toddlers who are behind in developmental areas such as speech and motor skills. Unlike an IEP (Individualized Education Plan) which is for school-age children, an IFSP focuses on supporting young children's development and their families. The video demonstrates how early intervention programs can help children catch up to their peers, as shown by Jensen's six-month update where he progressed from being behind in speech and motor skills to catching up and doing well.