Not medical advice. This site is general information only. In an emergency call your local emergency number. For advice about your own health, speak to a doctor, pharmacist or other qualified health professional.

Down Syndrome

GeneticTrisomy 211866 (described by John Langdon Down)Chromosomal
TypeGenetic
CauseTrisomy 21
First Known1866 (described by John Langdon Down)
TransmissionChromosomal

About Down Syndrome

The most common chromosomal condition, affecting 1 in 700 births. Caused by an extra copy of chromosome 21. Life expectancy has risen from 25 in 1983 to over 60 today. Prenatal screening was developed in the 1960s. Inclusion in education and employment has transformed outcomes.

Related Diseases