Detailed answer

Blackheads, also known as open comedones, are formed when hair follicles become clogged with excess oils, dead skin cells, and bacteria. However, blackheads themselves are not usually a sign of an infection. They are a type of mild acne and are considered non-inflammatory. Infections are more commonly associated with inflammatory acne, such as pustules or cysts, where bacteria invade the blocked follicles causing redness, swelling, and pain. It's important to note that blackheads can worsen or become infected if they are picked or squeezed, leading to inflammation and potential infection. If you suspect an infection or have persistent acne concerns, it is best to consult a dermatologist for proper evaluation and treatment.