I've has the same problem for as far back as I can remember, I'm 29 and a chick so it's not from shaving. It seems like
ingrown hairs at times but others feel like pimples
. I notice they itch or bother me when I'm stressed or if I've just worked out and my body temp is up. I've tried every kind of acid, zinc and dandruff shampoos, various natural oils and nothing has helped. When I had this checked out by a dermatologist I was told it's Follicular Dermatitis, given some cream and sent on my way.