I think the act of washing probably tends to make the skin temporarily sensitive and blotchy, I know I often look blotchy after bathing (before the ringworm episode).
Flourescent lights are awful, its not a natural light. I know in the past I could be feeling fairly happy with my appearance and then I'd go into a bathroom with flourescent lighting and I'd feel really ugly, I think they should be banned.
With the ringworm I have at the moment after a bath it seems to really flare up red looking. I think it is probably similar with a lot of skin conditions. Of course, if you tend to wash with really hot water maybe good idea to try warm water instead.
If you are anxious as well, it could be a bit of a nervous blotch I get those too.
best wishes with college.