It is estimated that up to 7 percent of people in hospitals and up to 2 percent of people in the community are colonized with MRSA bacteria (methicillin-resistant Staphylococcus aureus), either on the skin or within their nose (the two most common areas). Although these people may not have any signs or symptoms of MRSA, they can still infect others.
One of the most common symptoms of a MRSA infection is a single red bump that resembles a pimple, pustule, or boil. This bump (or cluster of bumps) is typically found on areas of skin that have visible trauma, such as cuts or abrasions. MRSA infections are also more likely to occur in areas of the body that are covered by hair, such as the back of the neck.