Same here. Going outside, even having my window open or being in the garden, can instantly crash my "numb" mood. Just heard someone say "that ugly guys lives here, did you see him?" (I'm at my desk, window open but it's impossible they saw me right now).
Even admitting it, typing it out, hurts. I thought twice if I should do it.
I wanted to go on the treadmill today (my parents' in a separate room), after days of not being outside my spirits have kind of risen. Now they've suddenly dropped again. Can't even have fresh air in my room.