A mother has opened up on her heart-wrenching experience with her daughter's rare condition, Prader-Willi syndrome, which ...

A disorder is a disturbance in normal physiological ... A good example of a syndrome is Down syndrome, which features a specific set of physical features and developmental difficulties but doesn ...

Down syndrome, or trisomy 21, is caused by the presence of a third copy of the 21st chromosome. Affected individuals have ...