82. Childhood and adolescent hygiene. Growth and developmental age periods. Characteristics of morbidity among children and adolescents.

What is child and adolescent hygiene ?

• Focuses on protecting and improving the health of children and adolescents.

• Studies how environmental, physical, social, and lifestyle factors influence the development of the body.
  

• Aims to create the best possible conditions for healthy growth and development, both physically and mentally.

It ensures that children grow up in safe, clean, and supportive environments that promote long-term well-being.

What is growth?

Growth refers to the physical increase in the size and mass of the infant or child.

This includes:

• Increase in height, weight, head circumference, and length of extremities

• Enlargement of individual body parts and organs

• Quantitative changes

What is development?

Refers to the qualitative changes in a child,

- including the differentiation of form and function

- due to the interaction of maturation (biological growth) and learning (experience).

• It involves the progressive acquisition of skills

  • (e.g., motor, cognitive, emotional, and social).

• It is a continuous, orderly, and cumulative process.

  • Each new ability builds upon the previous one

• Development reflects increasing complexity in behaviour, abilities, and understanding.

types of development

name them

• gross motor skill

• fine motor skill

• cognitive

• social and emotional

• speech and language

explain the types of development in children

• Gross motor skill development

  • Involves large muscle groups

  • Examples: sitting, crawling, standing, walking, running, jumping

• Fine motor skill development

  • Involves small muscle movements, especially of the hands and fingers

  • Examples: grasping objects, drawing, using utensils, buttoning clothes

• Cognitive development

  • Development of thinking, learning, problem-solving, and memory

  • Examples: recognising shapes, understanding cause and effect, solving puzzles

• Social and emotional development

  • Involves interacting with others and managing emotions

  • Examples: forming friendships, showing empathy, recognising emotions, playing cooperatively

• Speech and language development

  • Involves both understanding (receptive) and expressing (expressive) language

  • Examples: babbling, speaking words, forming sentences, following instructions

What causes development and growth?

• Nature and Nurture

• Genetic control – sets potential for height, organ maturation, brain development.

• Hormonal regulation – GH, thyroid, insulin, sex hormones → growth & maturation.

• Nutrition – proteins, calories, vitamins, minerals essential; malnutrition delays growth.

• Environment – housing, hygiene, healthcare, emotional & social support.

• Metabolism & clinical factors – esp. in puberty; hormonal + metabolic shifts drive rapid changes.

Factors influencing growth and development

• Genetics

• Prenatal factors

• Postnatal factors

• Available nutrition

• Economic considerations

• Cultural and community variables

Growth and developmental age periods

• Infancy:

  • Neonate: birth to 1 month

  • Infant: 1 month to 1 year

• Early childhood:

  • Toddler: 1 to 3 years

  • Preschool: 3 to 6 years

• Middle childhood (school age): 6 to 12 years

• Late childhood (adolescence): 13 to 18 years

Stages of child development

• Germinative stage: 12–60 days

• Embryonic stage: 8–12 weeks

• Fetal stage: 12–40 weeks

• First year: rapid growth and development

  • Infancy:

    • Neonate: birth to 1 month

    • Infant: 1 month to 1 year

  • Early childhood:

    • Toddler: 1 to 3 years

• Preschool years (3–6 years):

• Early school years (7–12 years):

Common Conditions in Children

• 🧬 Congenital Anomalies

  • Structural or functional abnormalities present at birth (e.g., heart defects, cleft palate).

• 🦠 Infectious Diseases

  • Viral: measles, mumps, chickenpox

  • Bacterial: strep throat, meningitis

• 🤕 Trauma

  • Falls, fractures, sports injuries, road accidents

  • Leading cause of morbidity in this age group

• 🦴 Disorders of the Musculoskeletal System

  • Scoliosis, juvenile idiopathic arthritis, developmental dysplasia of the hip

• 🩺 Non-Communicable Diseases (NCDs)

  • Cannot be transmitted person-to-person

  • Examples:

    • Cardiovascular diseases

    • Obesity

    • Diabetes mellitus

    • Oncologic diseases (e.g., leukemia, lymphoma)

Common causes of childhood morbidity

• Infectious diseases: pneumonia, diarrhoea, malaria

• Perinatal conditions: preterm birth, birth asphyxia

• Trauma

• Congenital anomalies

Common causes of morbidity in adolescents:

• Risky behaviors (e.g., substance use, unsafe sex)

• Road traffic accidents

• HIV/AIDS

• Mental health disorders (e.g., depression, suicide)

• Lower respiratory tract infections

• Interpersonal violence

Characteristics of morbidity among children and adolescents:

• Morbidity is generally higher in infancy and early childhood due to immature immune systems.
  

• Common illnesses include respiratory infections, gastrointestinal infections, and parasitic diseases.

• Chronic conditions such as asthma and allergies may appear during childhood.

• Growth and developmental disorders contribute to morbidity in younger children.