I'm a 35 year old female and have had recurring shingles for about 7 years which occurs anything from 3-7 times a year and occasionally back to back. It is always a small cluster of itchy/stinging spots at the base of my spine and thankfully, the only other symptom can be overly sensitive skin down the back of my thighs. It is the only 'illness' that I ever suffer from - I never get colds or other 'bugs' that seem to plague everyone around me. So, the main guidelines about shingles are very general and should not discount anyone who suffers from this if they fall outside the norm for the condition i.e. over 50, poor immune system, you only get it once, spots appear on the sides, chest or face etc. as I don't fit any of these but have had tests and confirmation.
My advice to anyone else who suffers from this is - do try to get antiviral medication like aciclovir as it will minimise the frequency of outbreaks, try the coldsore patches from the chemist (Compeed is the brand I use) - they can be costly but keep the area clean and covered to prevent spreading and definitely seem to clear it up more quickly and with less scarring and, finally, try not to touch the area at all outside of treating it. I have become good at recognising the early sysmptoms and the earlier I act on it, the less troublesome it is. I have also made a connection with using sunbeds as a couple of outbreaks have occurred shortly after using one so minimise UV exposure of the area (not usually a problem when it's on your bottom!). Hope this helps.