Vital Resistance, Hypersensitivity and the Essential Nature of Disease

In trophic reflexes the trophic nerve fibres those which control cellular nutrition carry abnormal nervous impulses which disturb the normal function of the cells of a part, lower their vitality and render them hypersensitive to noxious influences. Reflexes are the end-result of nervous impulses which arise from pathology in some distant part. Reflexes account for the constancy of local symptoms in many cases.