Is infection possible?

I know this question will seem far-fetched, but is it possible for HIV to survive in a substance like Preparation H, for example, if infected blood was put in it?  And if so, could using the ointment subsequently infect someone?

I am a monogamous male with no risk factors.  In late September, I took a business trip and when I arrived to my destination, I could tell my luggage had been opened.  I thought it was just airport security (although I didn't have a TSA notice in the bag...but didn't think it was a big deal).  I used all my personal items as usual...toothpaste, Preparation H, etc. during the trip as well as when I arrived home.   In October, I got a rash on the outside of my upper arm which has slowly moved to the top of my bicep.  A couple weeks ago, I noticed a rash on my right arm (raised bumps...some in what look like straight lines) on the outside of the elbow and now a few more bumps seems to be moving down my forearm.  Rash sometimes itches, but not a lot.  I've never had a rash, so I researched on the internet and came across stuff on HIV rash and have been freaking out ever since.  Of course, now I'm on high alert, so I perceive everything as a symptom...sore muscles, fatigue (probably from worry), headache, etc.  

I plan to get tested, but I'm not sure what would be a sufficient window period since I don't really have any specific risk event.  The only thing I could think of is if someone messed with my stuff on the trip...hence the weird question.  So is it even possible for HIV to survive in a substance like Preparation H ?      

[H. Hunter Handsfield, M.D.]

Welcome to the HIV forum.

The quick answer is no.  All medical creams and ointments have preseratives or other chemicals to prevent contamination with viruses and bacteria.  Nobody has ever caught HIV in this manner.  And skin rash (with no other symptoms) is never a symptom of HIV; and further, the rash you describe doesn't sound like that associated with a new HIV infection.

Feel free to be tested for HIV if it will make you feel better, but if you have had no other HIV risks, it is impossible you have HIV.  Instead of just getting tested, I recommend you see a doctor or clinic for proper evaluation of your rash.  Almost certainly there is an easy explanation of an everyday cause of skin rash.

Regards--  HHH, MD