I have had the same problem since I was like 12 I thought it was just that I had bad nerves. I know that probably doesn't help you much I just wanted to give my input. I also heard that when you have C-sections they might hit that nerve and screw it up. I don't know if you have had kids or not but I have heard that. I hope this helps.
do you have kids, and did you breastfeed, ive been breastfeeding for 11 months and i have absolutly no feeling in my breasts.... i wonder to if the feeling will come back
i have the same problem but mine was caused because i had a c-section and nerves were cut and i have no feeling about 3 inches above my scar and then the lower half of my breasts are numb.