Some of the most common side effects of MRSA include swelling, pain, pus drainage and red skin near the site of the infection, according to WebMD. Typically beginning as a staph skin infection, MRSA bacteria can infect many different areas of the body, including the bloodstream, urinary tract, surgical wounds and the lungs, creating a whole host of serious side effects if left untreated.
According to WebMD, if an MRSA infection is suspected, it is recommended that people seek medical treatment promptly. An MRSA infection is serious, although when treated quickly, most infections are easily treated. It is important to monitor treatment of the infection and report to a doctor if symptoms are not getting better within three or four days after starting antibiotics or if the infection worsens. Fever is a dangerous side effect of an MRSA infection, as it is typically a sign that the infection is worsening and the antibiotics being used to treat the infection are not working.
A compromised immune system puts people at a heightened risk for developing a more serious MRSA infection, notes WebMD. Staph bacteria, including MRSA, commonly live on the human body. While the bacteria is resistant to many of the most common antibiotics used to treat MRSA, there are still several medications that are capable of killing the bacteria.