A pimple is in fact a kind of comedo (blackhead, or dilated hair follicle) that arises because excess sebum and dead skin cells get stuck in the pores of the skin. In an aggravated state, it can develop into a pimple or papules. Now there are different types of red and white pimples in the case of skin condition acne: from papules to pustules.
Quite simply, the difference between acne and pimples on the face is that acne is a skin disease or condition while pimples (just like blackheads) are one of the symptoms of this. In the case of acne, the hair follicles and sebaceous glands of the skin are affected. Deep under the skin, your pores are connected to glands that produce an oily substance known as sebum. Once a pore clogs and the culprit, the P. acnes bacteria, multiplies in the pore, the immune system responds by sending white blood cells to fight the infection. Meanwhile, the surrounding area becomes inflamed, red and swollen. Red pimples, inflammatory acne. Unlike blackheads, a manifestation of a type of acne not characterized by redness and inflammation. The two most common forms of inflammatory acne on the face are papules and pustules.
You have papules and pustules. Papules are small pink or red dome-shaped bumps that are easy to see on the skin. They have clear edges and these papules can come in different shapes, usually on the face. Sometimes these papules cluster together to form a rash that feels rough like sandpaper. A pimple on the face is the medical term for the classic pimple. Pustules resemble papules at their core, except they are filled with yellowish liquid pus with a yellow or white center. The pus is made up of dead white blood cells sent throughout the body to fight infection. It is indeed a kind of pimple filled with blood, but visible as a white liquid.