Endless human evolution had led to certain level of change in mankind. Advancement in technology has minimized human effort and time. Eluding side effects due to technology growth has direct or indirect impact on human health. One such side effect caused by electrical devices is sensitiveness to Electromagnetic (EM) waves termed as Electro Magnetic Hypersensitivity (EHS). Cause, effects, symptoms, diagnosis, and treatment of EHS is discussed in this paper. The evidence of causality of exposures in effect is evaluated by means of criteria list. Other functional impairments with similar symptoms, causes and effects are also discussed. This paper discusses the e-survey conducted on different age group affected due to the effect of EHS. Hence from a limited quantity of research in this area concludes that diagnosis and awareness of EHS need to be improved to safeguard the mankind. © BEIESP.