Skin problems in users of video display terminals. Discrepancy between subjective symptoms and objective signs

The skin has become a target organ for concerns related to work with video display units (VDU). The aim of this investigation was to describe the clinical picture, to investigate whether skin problems are more common in VDU-exposed persons than in non-exposed controls, whether there are differences in objective and/or subjective symptoms and signs, and whether there is a "specific" dermatosis associated with VDU work. A self-reported questionnaire was mailed to 3,877 individuals. One out of five questions concerned the presence of skin problems. Of this group, 809 underwent a clinical dermatological evaluation in addition to filling out a structured questionnaire. Self-reported skin symptoms increased with increasing exposure to the VDU. The clinical diagnosis, based on objective signs and anamnestic data showed a somewhat attenuated association with exposure. The status diagnosis, based solely on objective signs, failed to show any association to VDU exposure. Unilateral skin rashes occurred at the same frequency in the exposed and the non-exposed groups. It is concluded that there is nothing in this investigation, or in any other investigation, that would speak against the notion that VDU-related skin problems and the allergy to electricity is just another facet of the "20th century syndrome". It is possible that individuals suffering from this condition, are conditioned to respond to certain stimuli by neurogenic release of mediators.