Therefore, based on your opening comments, HIV is
not a possible cause of the symptoms you report. It doesn't matter what
the symptoms are.
Now I have read the rest. Guess what?
1) Folliculitis is one of the most common of all human afflictions and occurs in everybody from time to time. It almost never suggests HIV.
2) As you seem to know, the chance of a lab error is extremely low. For purposes of argument, let's say 1 chance in 10,000.