Steroid injections, like cortisone shots, are used to reduce pain and inflammation in specific parts of the body. These injections contain corticosteroids, which are similar to a hormone your body naturally produces. When you have inflammation due to conditions like arthritis or tendinitis, the injections help to calm your immune system and reduce the swelling and pain. Although they don't heal the underlying issue, they provide relief so you can engage in physical therapy or other treatments that help with recovery. The procedure usually involves a needle insertion at the pain site, sometimes with the help of imaging technology for precision. While these injections are generally safe, they can have side effects, especially if used frequently.