(And oh, by the way: it's likely that you have MRSA colonized in your sinuses, too. 85 to 90 percent of the population has it colonized somewhere, usually in the sinuses.)
Reactions to Cephalexin can be pretty nasty, actually. One that comes to mind (and that I have encountered with a patient) is actual detachment and sloughing off of skin. It can occur over the entire body, and patients who experience this are treated in burn centers. It can be lethal, and it is excruciatingly painful, in essence the same as being flayed alive. I would not wish that on anyone, regardless of how distasteful their life choices may be.
Other severe adverse effects are jaundice, coagulopathies (reduced clotting of blood), hemorrhaging, and liver failure.
WOW! That is scary stuff, and I agree that I wouldn’t wish that on anyone either.
You are so right. I ended up with Stevens-Johnson Syndrome after a Keflex regime. Never take it again. Was taking it for an infection (not sinus).
Thanks. Weird, though. Especially since Miley would be my choice for a human petri dish in modern LA.