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The scientific study of the causes of developmental disorders involves many theories. Some of the major differences between these theories involves whether environment disrupts normal development, if abnormalities are pre-determined, or if they are products of human evolutionary history which become disorders in modern environments (see evolutionary psychiatry). [5]
Developmental disability is a diverse group of chronic conditions, comprising mental or physical impairments that arise before adulthood. Developmental disabilities cause individuals living with them many difficulties in certain areas of life, especially in "language, mobility, learning, self-help, and independent living". [1]
Down syndrome is the most common genetic cause of intellectual disability. Among children, the cause of intellectual disability is unknown for one-third to one-half of cases. [11] About 5% of cases are inherited. [12] Genetic defects that cause intellectual disability, but are not inherited, can be caused by accidents or mutations in genetic ...
Disability-adjusted life year for childhood-cluster diseases per 100,000 inhabitants. These include pertussis , poliomyelitis , diphtheria , measles , and tetanus . no data
This is not an exhaustive list and many injuries and medical problems cause disability. Some causes of disability, such as injuries, may resolve over time and are considered temporary disabilities. An acquired disability is the result of impairments that occur suddenly or chronically during the lifespan, as opposed to being born with the ...
Common chronic illnesses in children include asthma, diabetes, cystic fibrosis, obesity and overweight, malnutrition, developmental disabilities and differences, and mental illness. [7] Leading causes of poor outcomes due to childhood chronic illness, however, depend on geographic region.
In the United States "special needs" is a legal term applying in foster care, derived from the language in the Adoption and Safe Families Act of 1997. It is a diagnosis used to classify children as needing more services than those children without special needs who are in the foster care system.
Diseases such as measles can cause severe disabilities and even death, so the risk of death or disability for an unvaccinated child is higher than the risk for a child who has been vaccinated. [190] Despite medical evidence, antivaccine activism continues. A developing tactic is the "promotion of irrelevant research to justify the science ...