Does your "young" mother have an "old" gynecologist who's giving her "vaginitis"? It's a lot more common than you might think: Many women get their first infection when they're still young, and it can start when they're as young as nine or ten. This is common in girls, but it can also be common in boys too - especially if their mom is an experienced granny! I used to be concerned that my "young" mom would get an STD, but she didn't; she just developed a rash and felt bad for a week or so after the rash went away. She told me that it was probably just a case of old granny virus - but now I know that I should be worrying less about it if she goes through the same process..