U82.1: Resistance to methicillin

Resistance to methicillin is a medical condition in which certain strains of bacteria become resistant to antibiotics like methicillin, a type of penicillin, that were originally effective for treatment. This means these antibiotics can no longer kill the bacteria or stop their growth. It is most commonly associated with Staphylococcus aureus bacteria, creating a condition often referred to as methicillin-resistant Staphylococcus aureus (MRSA). The bacteria can infect various parts of the body, leading to a range of symptoms depending on the site of infection. Common examples include skin infections with symptoms like swollen, painful red bumps, or it can cause more severe complications if it enters deeper into the body, such as blood, lungs, or the urinary tract. Bacteria can develop resistance due to factors like overuse of antibiotics, and it is typically spread by direct contact with an infected wound or contaminated hands.