[Hypersensitivity syndrome].

We present a review on the electromagnetic hypersensitivity (EHS), a fenomenon where individuals experience adverse health effects while using, or being in the vicinity, of electric, magnetic or electromagnetic field sources and devices. Apparently, symptoms can be induced by both low and high frequencies, even at low level, and can vary substantially among different individuals. Scientific data do not support the hypothesis of a causal relationship between fields and EHS, even if knowledge is largely incomplete. Further studies in this field are needed.