Across Canada, the publicly insured method of diagnosing sensitivities is the patient interview, as an environmental history and possibly in conjunction with a patient journal. The interview covers many of the same areas as described in Hippocrates, "On Airs, Waters and Places."
Supported by the Arcangelo Rea Family Foundation, the Canadian Association of Physicians for the Environment (CAPE) put together The Children's Environmental Health Project. It's a good project, if you keep in mind that sensitivities are not new with a worsening environment. Environmentalists want to use people with sensitivities to describe how the environment is worsening, just as others want to use us to prove that prescription drugs are dangerous. The sub-concerns are valid, but our history, including legally-obligating clinical knowledge, and consequent right to protection from damaging acts of commission, are often eclipsed by the way sub-concerns are argued.