Picking Pimples Is Picking At Pimples And Acne Bad For Your Skin?

Is picking at pimples and acne bad for your skin? - picking pimples

I'm 14th I medication for my pimples. But my father said that some are "too big to be treated" and executes them. I tell him to stop, but it will not. Once done, my face is usually red and sometimes I begin to bleed. (though not much.) Is not it bad for the skin?