congenital adrenal hyperplasia - is a condition present at birth where the adrenal glands are enlarged. The knock-on effects are production of an excess of androgen (male hormones) and problems producing cortisol - this is better explained <a href="https://www.gosh.nhs.uk/conditions-and-treatments/conditions-we-treat/congenital-adrenal-hyperplasia-cah" target="_blank" rel="noopener">here</a>