Sclerosis (medicine) - Wikipedia Sclerosis (from Ancient Greek σκληρός (sklērós) 'hard') is the stiffening of a tissue or anatomical feature, usually caused by a replacement of the normal organ -specific tissue with connective tissue
Multiple sclerosis - Symptoms and causes - Mayo Clinic Multiple sclerosis is a disease that causes breakdown of the protective covering of nerves Multiple sclerosis can cause numbness, weakness, trouble walking, vision changes and other symptoms
Multiple Sclerosis - National Institute of Neurological Disorders and . . . Sclerosis is a medical term for the distinctive areas of scar-like tissue (also called plaques or lesions) that result from the attack on myelin by the immune system These areas are visible on an MRI (magnetic resonance imaging) The patches of scar-like tissue can be as small as the head of a pin or as large as a golf ball
2024 Diagnostic Criteria for Multiple Sclerosis—A Unified Approach This Viewpoint describes changes in the McDonald diagnostic criteria from 2017 to 2024 that reflect the use of tools for enhanced biological specificity and a contemporary understanding of MS as a single disease
Multiple Sclerosis (MS) – Symptoms and Causes | Penn Medicine Multiple sclerosis (MS) is an autoimmune disease that causes the immune system to turn inward and mistakenly attack the protective sheath, known as the myelin sheath, that encases nerve fibers It primarily affects the brain, spinal cord, and eye nerves of the central nervous system
Multiple Sclerosis (MS) - Johns Hopkins Medicine In MS, the immune system attacks the myelin, which becomes destroyed in many areas This loss of myelin forms scar tissue called sclerosis These areas are also called plaques or lesions When the nerves are damaged in this way, they can’t conduct electrical impulses normally to and from the brain