These skin bumps can be due to folliculitis or molluscum contagiosum. Molluscum contagiosum is a common, benign, self limiting viral infection of the skin. It generally affects children and typically occurs in the 2-5 age group. Treatment includes physical destruction or manual extrusion of the lesions, cryotherapy, and curettage.
I suggest you to get an evaluation done from a dermatologist.
I hope it helps. Take care and regards.