Hidradenitis, like many conditions, has a
spectrumSpectrum-4 of severity. Some people get oozing sores in their
armpitsArmpit lump all the time, some get them occasionally, others not at all. So no, it does not have to get worse. As to the diagnosis, hidradenitis is a pretty straightforward one, so a few minutes would indeed normally suffice to make it. If you're uncomfortable, I suggest getting another opinion regarding diagnosis and treatment.
Best.
Dr. Rockoff