Stress can lead to hair loss, with hair regrowth occurring after the stressor is removed.

“when college students are stressed out they lose their hair the body's amazing ability to tell you it's under stress is shown in the skin hair and nails what it does is it says why am I wasting energy producing something that is not necessary because I'm fighting something else let's just shed this and you can tell right away I mean we used to in clinic when I'd see you know medical students or college students come in I knew it was finals week they'd come with clumps of hair and as soon as finals week passed uh usually took a few months their hair grew back”