Can you get blisters from shaving?

Yes. I have been struggling with that for 3 years. It is called Hidradenitis Supperativa. Try to apply Neosporin to it, before it gets any bigger than the size of a pea. This will kill the infection in it, and it will not have a chance to grow. Mine grew into the size of a Golf ball, and I now have a draining open wound that will not heal. Be very careful and nip it in the bud and just slather that Neosporin on it. It will be gone in a few days. Unfortunately it was too late for me.