👉 Aggregate pimples, also known as cystic acne, occur when hair follicles become clogged with dead skin cells, oil, and bacteria, leading to inflammation and the formation of painful, pus-filled lumps beneath the skin's surface. These lesions typically develop when pores become blocked, often due to excess sebum production, genetics, or hormonal changes. The blockage causes bacteria to grow, resulting in redness, swelling, and pus formation, which can leave scars if not treated promptly.
