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Systemic scleroderma, or systemic sclerosis, is an autoimmune rheumatic disease characterised by excessive production and accumulation of collagen, called fibrosis, in the skin and internal organs and by injuries to small arteries. There are two major subgroups of systemic sclerosis based on the extent of skin involvement: limited and diffuse ...
Focal segmental glomerulosclerosis is a disease that attacks the kidney's filtering system causing serious scarring and thus a cause of nephrotic syndrome in children and adolescents, [1] as well as an important cause of kidney failure in adults. Hippocampal sclerosis, a brain damage often seen in individuals with temporal lobe epilepsy.
The cause is unknown, but it may be due to an abnormal immune response. [2] Risk factors include family history, certain genetic factors, and exposure to silica . [ 3 ] [ 4 ] [ 5 ] The underlying mechanism involves the abnormal growth of connective tissue , which is believed to be the result of the immune system attacking healthy tissues. [ 6 ]
Inflammatory demyelinating diseases (IDDs), sometimes called Idiopathic (IIDDs) due to the unknown etiology of some of them, are a heterogenous group of demyelinating diseases - conditions that cause damage to myelin, the protective sheath of nerve fibers - that occur against the background of an acute or chronic inflammatory process.
Drawing of sclerotic lesions from Babinski's thesis "Etude anatomique et clinique de la sclérose en plaques", 1885. Multiple sclerosis (MS) can be pathologically defined as the presence of distributed glial scars in the central nervous system that must show dissemination in time (DIT) and in space (DIS) to be considered MS lesions.
The sclerosis is caused by an increase in fibroblasts in the cell wall which causes contraction of the vein. The process requires carefully assessing the strength of the sclerosing solution so it is strong enough to cause a clinically significant effect in the target vein without causing excessive damage to surrounding tissues. [16]
In short, melasma is a chronic skin condition that appears as darkened areas on the face due to an overproduction of melanin, says Gina Charles, MO, a family physician specializing in skincare. It ...
The exact cause of lipodermatosclerosis is unknown. [3] [6] Venous disease, such as venous incompetence, venous hypertension, and body mass may be relevant to the underlying pathogenesis. [3] Increased blood pressure in the veins (venous hypertension) can cause diffusion of substances, including fibrin, out of capillaries.