Trisomy 18 (Edwards syndrome)

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Also known as Edwards syndrome, Trisomy 18 is a condition in which a child has three copies of chromosome 18 instead of the usual two. The extra chromosome causes severe intellectual disability and physical abnormalities. Most babies born with Trisomy 18 do not live beyond a week, but a small percentage survive their first year and beyond.

A baby with Trisomy 18 is usually underweight, with distinguishable features such as a small head and jaw, low-set ears and clenched hands. Internal organs are often affected too, with abnormalities in the heart, lungs, diaphragm, blood vessels and kidneys.

There is no cure for Trisomy 18, and doctors and parents often have to make difficult decisions about treatment. Many parents need to make a very difficult choice between making their baby comfortable and prolonging life through invasive surgery.

The following professionals can help: paediatrician, geneticist, genetic counsellor.

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