Down syndrome; Down's syndrome
Medical term for the chromosomal condition. In everyday Japanese, ダウン症 is the standard term; the older form ダウン症候群 is less common.
Children with Down syndrome can make great progress with early intervention.
She is working to spread accurate knowledge about Down syndrome.
From English 'Down syndrome', named after the British physician John Langdon Down, combined with the Japanese suffix 症 (しょう, 'syndrome' or 'disease').