ScienceHair loss – why does it happen?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience11/06/2020November 6, 2020Sudden hair loss can be very upsetting, but the problem can often be treated. It’s important to identify the causes. Stress and eczema, for example, can cause hair to fall out. https://p.dw.com/p/3krb7Advertisement