Accutane and Joint Pain

Hey I have been off accutane for almost a year now and I never had any joint pain while on it, but over the last few months I have been experiencing some pretty bad low back pain which came on without an injury. I have also noticed that when I do tweak muscles I don't seem to heal as fast as I had prior to accutane. I am only 20 years old so I highly doubt this is normal. I was wondering if anyone knew how long the accutane can have these effects?

Post Accutane/Minocycline Facial Flushing

I was on accutane for six months about a year ago and after getting off I was put on minocycline which I took from then on until about six weeks ago. Last November I started to get facial redness/flushing on the sides of my face and nowhere else. The main trigger that causes my redness/flushing is heat and my face seems to be extremely sensitive to any heat and I can even flush in temperatures of 65F. At first I thought it was just due to dry skin, but my skin hasn't been dry for months and I still suffer from this problem. My dermatologist had no idea what was wrong with me and she had me stop taking minocycline to see if that helped. I noticed a marked improvement once I stopped taking the minocycline, but I still have facial redness/flushing six weeks later. The minocycline was definitely making things worse, but the biggest change I have seen since stopping it is in the intensity of flushing I get. When I was on the minocycline my face felt like it was on fire and now, even though I still flush, it isn't to the same intensity as before. When my face starts to feel hot my cheeks feel sticky even though my skin still feels smooth to the touch so I guess it is like an internal problem. I am not sure what that means, but I think that maybe my skin doesn't produce enough oil after accutane or something? I used to have pretty oily skin and now I don't have oily skin at all. The only product I am using right now is klaron, but I don't think that it has any connection with flushing and it has been really effective in keeping me acne free. I was hoping to get some advice if anyone had any?