A three-year-old boy in India has undergone brain surgery to cure premature puberty, which made his genitals grow, deepened the timbre of his voice and caused acne to sprout on his face.

The boy was just 18 months old when his parents noticed the physical changes that normally start to develop in a boy at least a decade later. His behaviour had also become aggressive…

More tests revealed that he was suffering from precocious puberty, a condition that affects one in every 5,000 to 10,000 children in the US, although its onset at such a young age is much rarer.