1 Fragile X syndrome is a single gene disorder located on the X chromosome and is the leading inherited cause of intellectual disability. 2  Problems during pregnancy-Use of alcohol or drugs by the pregnant mother can cause intellectual disability. There are many genetic diseases associated with intellectual disability. 2  Some examples include PKU (phenylketonuria), a single gene disorder. 3  Due to a missing or defective enzyme, children with PKU cannot process a part of a protein called phenylalanine.
Potentially Hazardous Foods (PHFs): Potentially hazardous Foods (PHFs) are foods that require time and temperature control in order to prevent bacteria growth. The following are considered PHFs: Cooked or Raw Animal Products: Meat, fish, and poultry. Dairy products, including custard pies. Eggs (except for air-dried, hard boiled eggs with an intact shell)
Tracheoesophageal fistula. Definition. Tracheoesophageal fistula (TEF) is a birth defect in which the trachea is connected to the esophagus. In most cases, the esophagus is discontinuous (an esophageal atresia ), causing immediate feeding difficulties.