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What is The new terminology for down’s syndrome is ? and explain in detail?
Ref. Oxford textbook of Psychiatry. Page 170
 
Down’s Syndrome Features

Most common autosomal trisomy  
Mental retardation  
Short stature  
Hypotonia  
Depressed nasal bridge, upslanting palpebral fissures, epicanthal fold  
Congenital heart defects in approximately 40% of cases  
Increased risk of acute lymphoblastic leukemia  
Alzheimer disease by fifth or sixth decade (amyloid precursor protein, APP gene on chromosome 21)  
Reduced fertility  
Risk increases with increased maternal age