cellulitis: an inflammation of body tissue (especially that below the skin) characterized by fever and swelling and redness and pain
inflammation: a response of body tissues to injury or irritation; characterized by pain and swelling and redness and heat
acetaminophen: an analgesic for mild pain but not for inflammation; also used as an antipyretic; (Datril, Tylenol, Panadol, Phenaphen, Tempra, and Anacin III are trademarks of brands of acetaminophen tablets)