Hi,
I am sorry if I can't help you with your problem ,because I honestly never heard of a nipple falling off and grow back again.If this abnormality you are describing is actually true,then please consult a Breast Specialist for evaluation.
Take care...
Hi again,
On second thought,could it be that what you meant was that the "skin" of your nipple cracks,flakes and falls off and not your nipple itself ?.
If this is the case,it's probably due to skin dryness.Applying pure Lanolin such as "Lansinoh" (used by breastfeeding mothers) would greatly help to keep your nipple well moisturized.You can purchase the cream over the counter at your local pharmacy.
If the condition still persists,a visit to a dermatologist would be a good idea in case it's eczema or a fungal infection that needs to be treated.
However, if you meant that the nipple itself falls off,then a Breast Specialist would be the best one to consult to make sure that also a more serious condition such as Paget disease is ruled out. .
I hope this helps....