wound or injury which results in pathological change in tissue (e.g. head injury which results in seizure-causing lesions in the brain). Lesions are sometimes surgically removed to reduce or prevent recurring seizures.
In the ostepathic sense, a lesion is a structural (anatomical) abnormality which produces a functional (physiological) disorder. Correction of lesions is a primary goal of traditional osteopathy. Lesions may be primary or secondary. Primary lesions may be produced by trauma or posture. Secondary lesions may result from attempts of the body to compensate for a primary lesion. Reflex lesions may also be considered to be secondary lesions.
A word often used by doctors to describe many different types of injury to body tissue. A lesion may be caused by disease or wounding. For example, it can be used to describe a mole, a bruise, a spot, a cut, an ulcer, or a tumour.