I'm a 32 year old male. This is probably the 5th time I've taken ...

It is not that unusual to get a rash from taking antibiotics. It took me about 3 specialists to be told that everyone taking antibiotics should take pro-biotics at the same time. The antibiotics destroy the good bacteria in your system as well as the bad, so the probiotics (found at health food stores)
restore the good bacteria. I don't understand why this fact is not more well known. I had a rash that wouldn't quit and no doctor or dermatologist could explain it, except the environmentalist physician I finally found.

Sorry to hear about your bad experience. Nothing is worse than trying to take something for relief only to end up feeling worse. I wanted to suggest that some of the symptoms you are having such as anal itch could be from taking to many antibiotics, killing off your healthy flora. You may have a candida yeast overgrowth in your system. Start taking probiotics to regain your bodies natural flora balance in your intestines. Yorgurt offers a tasty way to get the heathy probiotics in your system or taking acidolphilus capsules. This may help you find some relief..

Where was the rash on your face and how long after taking the z-pak did you get it. I started getting a rash the day after I stopped the cycle and it has lasted just over a week.

Where on the face was the rash? I finished a z-pak cycle and the next day I got a rash on my face, on both sides of my face between the cheeks and nose. Also a small rash on mu upper chest next to the collar bone. My skin seems sensitive and itchy even where there is no rash. I have had the redness on my face for 10 days now. seems to be getting better not worse.