Hi!
First, make sure he sees a Dr. and have them do a culture for MRSA.
I have MRSA (I got it when I was a nurse). If it is caught soon enough, he can take an oral antibiotic (I won't post the name of it here, since I'm not a Dr.). But if it isn't caught fast enough, Lauren is right - you need IV antibiotics.
The first time I had it, I had to be put on very strong IV antibiotics and again the 2nd time. Now, that I know what to look for, I can take the oral antibiotics. This is something I will have for the rest of my life, according to the doctors, but I have only had 1 flareup in a year and it was easily controlled with the oral antibiotics.
Hugs and prayers!
Amy