👉 The affected areas, which are typically on the face, chest, or back, show enlarged, inflamed, and often red pimples due to increased sebum production and bacterial infection. These pimples may also exhibit whiteheads or blackheads, indicating clogged pores, and sometimes have a crusty appearance as they begin to heal. The inflammation and redness are symptoms of acne vulgaris, a common skin condition characterized by these issues.