According to MedlinePlus, a pimple becomes swollen and irritated when the wall of the pore breaks, allowing pus, sebum and debris to leak into the surrounding tissues. This occurs in several types of acne blemishes including papules, pustules, cysts and nodules, according to the American Academy of Dermatology. Common blackheads and whiteheads are contained by the pore and normally do not cause swelling, redness and irritation outside of the pore.
Commonly appearing on the face, shoulders, chest and upper back, acne causes multiple types of blemishes. Most blemishes start out as whiteheads and blackheads. However, the bacteria and pus found within can sometimes move into the skin, causing swollen pimples and deeper blemishes. The American Academy of Dermatology describes papules and pustules as rough blisters that commonly appear close together. Cysts and nodules are deeper and often feel like hard lumps under the skin.
Common blemishes can also become red, irritated and swollen if they are picked at or popped. Not only can squeezing pimples cause the pore wall to break, which ultimately allows the bacteria to enter the skin, the irritation from squeezing alone can cause redness, swelling and pain at the site even when a wall breach does not occur.Learn More
Icing the skin, using sulfur-based creams or masks, using tea tree oil and getting a corticosteroid injection from a dermatologist can help reduce the swelling associated with acne, according to WebMD. Spot treatments can also help decrease the inflammation, states About.com.Full Answer >
To get rid of pimples, reduce the swelling and redness before applying a spot treatment. Use acne-fighting face wash, apply a baking soda mask, and express blemishes with cotton swabs. Heal the expressed pimple with honey.Full Answer >
Acne is a result of hair follicles being obstructed by dead skin and oil. This happens when sebum, an oily substance that is secreted by sebaceous glands, is produced in excess amounts. Sebum combined with dead skin cells forms a soft plug in the follicle. There, the skin bacteria cause an infection whereby pustule and cysts are created.Full Answer >
Clearasil products with benzoyl peroxide as the active ingredient work by killing acne-causing bacteria on the skin and promoting the turnover of dead skin cells. Clearasil products containing salicylic acid work by improving the skin’s moisture and making it easier for the skin to shed cells.Full Answer >