But, this past winter I was very ill with a stress related illness in which it took all the energy I had just to get out of bed. (redeeminggod.com)
In such conditions, dangerously high body temperatures can cause heat - related illnesses such as heat exhaustion and the most severe form, heat stroke. (whatsupforkids.com)
Our head teacher was off with stress related illness for 12 months. (teachfirst.org.uk)