<unk>  <unk>  refers to extreme short stature that does not have a diagnostic explanation<unk>  designates a condition that is unexplained or not understood) after an ordinary growth evaluation. The term has been in use since at least 1975 without a precise percentile or statistical definition of "extreme".
Idiopathic short stature
Psychosocial short stature
Constitutional growth delay
Congenital adrenal hyperplasia
Hypothyroidism
Isolated growth hormone deficiency
Micromegaly
Late onset congenital adrenal hyperplasia