More than 200 possible causes of intellectual disability have been identified but in some cases, no clear cause can be found.
Intellectual disability can be caused by:
- Factors influencing the unborn baby, such as hereditary factors, excessive smoking or drinking by the expectant mother, abuse of chemicals/drugs, exposure to too much radiation/X-rays
- RH-factor – the blood of the mother and the baby are incompatible (e.g. the mother is RH-negative and the baby is RH-positive)
- living in deprived conditions, malnutrition
- complications during pregnancy
- untreated infections, illness and disease, such as German Measles, Meningitis, Diabetes, Syphilis, AIDS hypertension, jaundice, tuberculosis, encephalitis
- brain injury as a result of falling, physical abuse or road accidents
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Symptoms of intellectual disability