Allergies are unusual sensitivities to environmental factors such as: foods, drugs, water, fabrics, chemicals, plants and animals, among many others. Whatever the factor is, it is often harmless to most people. To other people, it’s a substance the body sees as a threat, triggering a response that leads to inflammation, pain, headaches, "brain-fog" and other discomforts. To determine sensitivities, muscle strength testing is used. Then, individual allergies can be eliminated by activating acupressure points along the spine and extremities.