When he was just three months old, Lucy Muthoni's son, who is now six years old, developed a swelling on his umbilical cord which expanded whenever he cried. "My son used to cry and sometimes cough at ...

A belly button or tummy button is technically known as a navel or umbilicus. Humans have belly buttons because before we are born, we are connected to our mothers via an umbilical cord. This is a tube ...