*3.2.1 Dysmorphic features*

Being familiar with congenital conditions such as Down's syndrome (trisomy 21) can help the examiner look out for signs that are seen more often in these patients by association [5]. In trisomy 21 this may include epicanthic folds, hypotonia, a sandal gap, Simian creases, upslanting palpebral fissures and a protruding tongue [5].
