Common symptoms

• Persistent, recurrent red spots or swelling on the skin, generally known as pimples
• Dark spots with open pores at the center (blackheads)
• Tiny white bumps under the skin that have no obvious opening (whiteheads)
• Red swellings or lumps (known as papules) that are visibly filled with pus
• Nodules or lumps under the skin that are inflamed, fluid-filled, and often tender; these nodules may become as large as an inch across