I wash my hair about twice a week now because I have very little oil. Chspstick all day long. In the past month or two I have noticed increased sweating at the gym. I barely exert myself and I'm dripping sweat. It's weird - I have never been a sweater. I occasionally have some soreness if I work out hard or sit in an awkward position too long - but this could be the fact that im almost 30 now too lol.
I have had the bumps I think you're talking about in the latter months of accutane. Tiny, you can barely see them, nothing in them. For me they appear then kind of flake awsy in about a week. I don't really worry about them, I think its just natural skin things with accutane effects.
My dad told me the other day that when he took accutane in his late 20s, the oil came back pretty much right after but he was totally acne free for 10 years after. That's comforting. Maybe in 10 years we'll do another dose, they'll have developed something new or we'll have grown out of it.