herpes zoste
"I started taking Valtrex within 24 hours of a small rash appearing.  The rash continued to get somewhat larger but then stopped (within 3 days). It never developed any further. I just finished the 7 day prescription.  No leakage, no pain, just a slight itch and the rash is fading.  It appears that the sooner you start treatment, the faster it clears up. Thanks"