Drug-induced liver diseases are diseases of the liver that are caused by physician-prescribed medications, over-the-counter medications, vitamins, hormones, herbs, illicit (recreational) drugs, and environmental toxins.
Examples of chromosomal disorders. Some of the most common chromosomal abnormalities include: 1  Down's syndrome or trisomy 21. 2  Edward's syndrome or trisomy 18.3  Patau syndrome or trisomy 13. 4  Cri du chat syndrome or 5p minus syndrome (partial deletion of short arm of chromosome 5).ome of the most common chromosomal abnormalities include: 1  Down's syndrome or trisomy 21. 2  Edward's syndrome or trisomy 18. 3  Patau syndrome or trisomy 13.
Chromosome abnormalities usually occur when there is an error in cell division. There are two kinds of cell division, mitosis and meiosis. Mitosis results in two cells that are duplicates of the original cell. One cell with 46 chromosomes divides and becomes two cells with 46 chromosomes each.