Imagine becoming so sick that your hair falls out. Is that even possible? Hair loss or hair shedding can happen for many reasons. Sometimes it occurs as a result of high levels of stress on the body. When this is the case, you can count on a variety of factors influencing your hair loss and whether or not it improves. Every situation is different. Take a look at what can happen in some situations, but be sure to speak to your doctor about any hair loss you experience if you’ve been sick.