I'm the same way with art!! I went to art college and I was fine through, until I had a large psychotic episode at school, sent to see a psychiatrist, and then hospitalized.
After, I was on a lot of antipsychs, and I forgot how to draw internally basically.
I know the basics, I know what was taught in class, but I have so much difficulty visualizing it without a reference.

My head feels like its stuffed full of cotton and rocks, if that makes any kind of sense. Just some parts rattling around, sometimes I'm better at remembering, sometimes I'm not. Some days are better than others.

I've been told I'm one of those "wears completely inappropriate clothing for certain weather" before. I'm in Texas currently, and I'll regularly go out in the 100+F weather wearing leather jackets and stuff. I don't actually remember ever doing that, just stuff I've heard people say.