bacterial infection
"I was prescribed 500 mg every 12 hours for ten days to fight a bacterial problem stemming from a stye on my eye.  The cephalexin is working after 2 days however it makes me itch; no hives just mild itching.  I make sure I take it with lots of water and I am eating yogurt to make sure I do not get a yeast infection.  If the itching worsens I will obtain a different antibiotic.  I am sure there is something else that won't make me itch.  I had some other antibiotic when I had a root canal that did not make me itch."