Down syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of an extra copy of chromosome 21. It is characterized by a range of physical and intellectual disabilities. Individuals with Down syndrome typically have distinctive facial features, such as almond-shaped eyes, a flat facial profile, and a small nose and mouth. They may also have developmental delays, intellectual disability, and medical conditions such as heart problems, hearing loss, and thyroid problems. While there is no cure for Down syndrome, early support programs and helpful therapies can help individuals with Down syndrome have fulfilling lives.

英語での「Down syndrome」の定義と意味

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