Nonspecific foci of T2 prolongation in subcortical and periventricular white matter can be caused by a variety of conditions such as small vessel ischemic disease, chronic microvascular changes, demyelination, or inflammatory processes. It is commonly seen in conditions like small vessel disease, migraine, or chronic microvascular changes related to aging. Further evaluation may be needed to determine the exact cause in each individual case.
The myelin sheath that surrounds the nerve
Inflammation and fever are nonspecific immune system reactions.
I'm having a bit of a problem accepting your nonspecific example.
Multiple sclerosis is a condition characterized by scattered patches of demyelination of nerve fibers in the brain and spinal cord. This demyelination disrupts the ability of nerve fibers to conduct electrical impulses, leading to various neurological symptoms.
Your body's most important nonspecific defense is the skin. Other nonspecific defenses include mucus, sweat, and tears.
Specific!
Multiple Sclerosis.
A vasculitic process is something that was going on in your body that caused inflammation of vessels. Focal demyelination is a small area of loss of the "insulating" fatty layer that covers the nerves.
Nonspecific back pain would be back pain with an unknown cause. Therefore nonspecific therapy would be either therapy of an unknown nature (ha ha) or therapy not specific to the illness/injury only. Like psychotherapy for back pain -- you could call that nonspecific therapy.
Nonspecific.
Inflammation and fever are nonspecific immune system reactions.