Environmental Sensitivity: A Neurobiological Phenomenon?

Researchers often use the term “sensitivity ” when theorizing that certain persons may be more readily affected by various influences than others. Through a review of the literature, it is argued that some individuals are disposed toward a range of sensitivities that, in novelty as well as intensity, distinguish them from the general population. The author cites evidence indicating that such persons exhibit greater susceptibility to a range of environmental factors including allergies, migraine headache, chronic pain, and chronic fatigue. Their immediate family members appear to be similarly affected. Additionally, these “sensitive” individuals report a high degree of anomalous perception. While no single factor in a person's background is likely to distinguish him/her as sensitive, eight demographic or personality factors are found to be significant.