11, 17 or 21 alpha-hydroxylase deficiencies

Let's keep this real short and sweet and hopefully easy to remember.

21 alpha-hydroxlase deficiency: (masculinization, pseudohermaphrodite) 

the most common congenital adrenal hyperplasia syndrome

Key feature = Hypotension and dehydration (salt wasting)

11 alpha-hydroxlase deficiency: (Masculinization)

Key feature used to distinguish 11 from 21 = hypertension due to increased mineralcorticoids

17 alpha-hydroxylase deficiency: (fails to mature sexually)

phenotypical female but never matures = no sex hormones = this distinguishes it from 11 because 17 has increased mineralcorticoids and hypertension as well.