An annoying symptom of growing older. Mine started to appear when I was about 55, luckily at the moment they are not painful or bleeding but there are a couple of small hard external ones about the size of match heads, which annoy me when I wash in the shower. I showed them to my GP and he had a fumble around, which rather hurt, and told me mine were nothing compared with what some people suffer. So I don't think there's anything that can be done. Also luckily they don't make cycling painful. I use a Charge Knife saddle, which despite the off-putting name is very comfortable indeed.