Stress can be difficult to recognize, especially if you have a high-stress job or home life. Losing more hair than usual could indicate that you're stressed out, even if you're not aware of it at the time. Stress can be a major cause of hair loss, especially if it is severe or lasts a long time. Determine the source of your stress, and your hair should return to normal and regrow in a few months if this is the only cause of your hair loss.