Short stature: differential

ABCDEFG:
Alone (neglected infant)
Bone dysplasias (rickets, scoliosis, mucopolysaccharidoses)
Chromosomal (Turner's, Down's)
Delayed growth
Endocrine (low growth hormone, Cushing's, hypothyroid)
Familial
GI malabsorption (celiac, Crohn's)