How to get rid of pimples on arms and chest?

What are those white pimples on my chest and back?

• Well their not actually pimples, they look like pimples but they have no pus. Their white and their on my chest and upper back, and a few on my arms. I had them for 4 years already :(! They won't go away no matter what I do, I even tried pimple cream. When I was in China a month ago, I went to see a dermatologist and they even cutted a sample out and found out nothing was wrong and that it's just there, some people just have it and it's rare. I was like great, no cure and I have a scar. I don't know what it's called in english x__x; and I don't want to see a dermatologist in the states cause their expensive and I don't want to go see one and get the same answer, I just want to know what name of it. Does anybody know what it's called? This is why I never wear low cut shirts x__x

• Answer:

  It could be a boil or a white head.