Trisomy 21, commonly known as Down syndrome, is a genetic condition caused by an extra copy of chromosome 21, leading to developmental and intellectual challenges. While there is no cure, treatments focus on managing symptoms and supporting development. Early intervention is crucial, utilizing physical, occupational, and speech therapies, along with specialized education. No specific medications treat Trisomy 21 itself; however, drugs are prescribed to manage co-occurring conditions, such as thyroid disorders, heart defects, or infections. Regular medical checkups and a strong support system are key to helping individuals lead healthy, fulfilling lives.