The medical name for acne is acne vulgaris, and occlusion is a mild manifestation of acne and refers to whitehead pimples.
Acne can manifest itself in a variety of ways, including whiteheads, blackheads, pimples, pustules, skin nodules, and cysts. Whiteheads are closed pimples, which are called closed pimples because they differ from the other manifestations in that they are small skin-colored pimples that have no openings in the skin and are therefore called closed pimples.
Whiteheads are white pimples that form when sebum and keratin build up and block the opening of the hair follicle, but there is no opening in the skin. Acne, on the other hand, also includes blackheads, pimples, pustules, skin nodules, and cysts, and all of these types of acne will have openings in the skin.
However, whiteheads may become pimples, pustules, etc. after infection, so the difference is that whiteheads are only one type of acne, and acne includes whiteheads.
It is recommended that acne be treated promptly and in accordance with medical advice to prevent localized infections due to improper handling.