Systemic Lupus Erythematosus (SLE)

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Systemic Lupus Erythematosus is an inflammatory multi-system disease of unknown etiology. It is recognized worldwide and clearly more prevalent in women, especially in their reproductive years.

 

This effect of age and sex on incidence and prevalence rates of SLE suggests a role for hormonal factors in its pathogenesis. In the USA, SLE is three times more common among blacks than whites. Genetic factors have long been considered to have a role in the formation of SLE. There are observations of a higher prevalence of SLE among twins.

 

SLE is a chronic inflammatory disease with variable clinical courses. The clinical picture of SLE can change over time, in terms of both disease activity and organ involvement. The pathogenesis of SLE is complex and parallels the wide variation in clinical symptoms. No single mechanism of action applies to all cases and the initial triggering events remain largely unknown.

 

SLE can affect the skin, joints, kidneys, lungs, nervous system, serous membranes and/or other organs of the body. Immunologic abnormalities, especially the production of a number of antinuclear antibodies, are another prominent feature of the disease. The clinical course may be characterized by periods of remissions and chronic or acute relapses.

 

The criteria for the classification of SLE require 4 of the following 11 items:

Most patients with SLE have mild to moderate disease with chronic smoldering symptoms, punctuated by gradual or sudden increases in disease activity (flare-ups). The disease course in a smaller percentage of patients is characterized by alternating flare-ups and complete clinical remissions. Rarely, a patient has a single episode of active SLE followed by sustained remission.

The management of patients with SLE is decided on an individual basis, guided by the degree and severity of specific symptoms and organ involvement.

 

Preventive strategies for decreasing SLE flare-ups are recommended for most patients. These include:

Avoid ultraviolet light exposure not only through the use of sunscreens but by staying out of the sunlight or wearing protective clothing.

 

Avoid exercising to exhaustion. Extreme physical efforts are likely to trigger increased lupus activity.

Avoid infections. Many common respiratory infections can be prevented by frequent washing of the hands and other simple hygiene measures.

 

Pregnancy may entail a slightly increased risk of a lupus flare-up. Also, breast-feeding may increase the risk of a postpartum flare-up.

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