Urinary incontinence is very common during a faint and fainting is more common in teenagers. My DD used to do it quite regularly as did I. Possibly a good idea to get her checked out particularly with your family history but no need to panic.
I was also going to suggest vasovagal syncope as it is something I have the pleasure of experiencing. I haven't wet myself whilst fainting (yet) but I do vomit whilst unconscious and thrash about as if I am having a fit (sooo attractive!). When I was 14 or 15 I had a phase of regular fainting but there was never Any reason for it decided.
I actually started to go into a vomit/faint this morning following a sudden bout of diarrhoea (again, I'm so attractive!) but managed to avoid it by lying down flat and trying to calm my breathing.
I hope she's ok. It's horrible to have this at any time, but particularly when you're in your teens - I remember the mortification of having to lie down on the pavement when I felt it starting to happen when out with my pals!
Fainting......not sure why? Speak to GP for referal regarding Vasovagal syncope..............often misdiagnosed as epilepsy............... TILT TABLE TEST .............. is the definitive test for vasovagal synccope also known as Reflex Anoxic Syndrome........Check out this helpful website which also explains LONG QT which may be a reason for faints........... www.STARS.org.uk STARS have lots of useful information. Hope this helps some posts here.
It is only twice in the last 6 months, once about a month before her periods started, but she did it again just this evening at supper- happy and talking one moment, keeled over sideways the next, and totally wet herself, poor thing. She was way more embarrassed about that than bothered about fainting. The thing is that my mother has epilepsy and I'm always slightly hyper-aware of that.
I've fainted reasonably regularly throughout my life due to low blood pressure. Only time I lost bladder control was when I had blood clots on my lungs. Obviously your dd wont have this as she would have other symptoms but it needs checking out IMO.
This used to happen to me as a child and teenager, I used to faint fairly regularly if I had a minor injury (fortunately never had any major ones) and often wet myself, it was mortifying. I can't remember what tests etc I had but do remember that the conclusion was that it was nothing to worry about and I would grow out of it. They were right; the last time it happened was when I was 17.