How do I determine my type of disqualification from the Army and whether I still have a chance to enlist?

Find another recruiter and start again. If your skin is cleared up ask them to send you back through MEPS again so you can be seen.

Even if it turns out to be the "end of the line" for the Army, don't discount other branches of service or even the National Guard or Reserves. And as LCDR Joshua Gillespie pointed out, there is the First Responder Route to explore as well. Best of Luck to you and thank you for the effort and desire to serve.

John- A lot has changed in twenty years, so take my advice for what it is; layman's logic. If the current instructions include it as a permanently disqualifying condition, and you've already gone through, and been rejected by the waiver process... that may indeed be all there is to be done. If you're seriously committed to this path, why not try again... and again... and again. The worst that can happen is that you'll be told, "no". Getting into the theoretical... regulations do change, and usually due to very good reasons; you may find that recruiters, boards, and even the published guidance itself eases off in the face of manpower shortages, etc. Barring that, all I can add is that while "rules are rules"... I wouldn't give it up until you've exhausted all other options. If you find yourself at that point, satisfied that you've done literally everything humanly possible... then consider the fact that there are numerous ways to serve in other capacities. We live in a country where law enforcement is on the front-line of a war on gang-violence, organized crime, illegal drug distribution, human trafficking... etc, etc. Perhaps a career in LE has fewer medical hurdles. Maybe your motivation is in saving lives... you could certainly do worse than a career as an EMT, firefighter, or other first responder. If it's the "adventure" and "travel"... you may discover that the Military is somewhat more limited in those factors than one may imagine; perhaps there are other fields offering much of the same, minus many of the "negatives". In closing, understand this: the Military isn't for everyone; that's why so few (as a percentage) of the population participate. That being said, the Military hardly represents the only paths of honor, courage, and service for a citizen. Good luck, and best wishes!