Failure to thrive can refer to concentrated weight gain.
 "Wasting" refers to a deceleration in stature more than 2 standard deviations from median weight-for-height, whereas "stunting" is a drop of more than 2 standard deviations from the median height-for-age
== Signs and symptoms ==Failure to thrive is most commonly diagnosed before two years of age, when growth rates are highest, though FTT can present among children and adolescents of any age

