They will stay there for a long period of time of time. If they are not picked at, they will maintain their appearance. If you pick them, they can get contaminated and when the an infection is healed the spot will stay scarred.In time, the number of the bumps could reduce for a period of time, right after which they can re-seem, in the exact same amount. However, with time, the bumps will diminish in number, although other bumps will not take their place.