While the genetics of SLE are not very well understood, there is growing evidence for the involvement of specific genes in this complex autoimmune disease. Part of the complexity of this disease is due to the effects of both environment and genetics factors that may contribute to its development. Further compounding our understanding of the etiology of the disease is the involvement of several organ systems. Genetic studies of the rates of disease in families supports the genetic basis of this disease with a heritability of >66%. Identical (monozygotic) twins were found to share susceptibility to the disease at >35% rate compared to fraternal (dizygotic) twins and other full siblings who only showed a 2–5% concordance in shared inheritance.
There are over 200 disorders that impact connective tissue. Some, like cellulitis, are the result of an infection. Injuries can cause connective tissue disorders, such as scars. Others, such as Ehlers-Danlos syndrome, Marfan syndrome, and osteogenesis imperfecta, are genetic. Still others, like scleroderma, have no known cause. Each disorder has its own symptoms and needs different treatment.
Antinuclear antibody (ANA) testing and anti-extractable nuclear antigen (anti-ENA) form the mainstay of serologic testing for SLE. Several techniques are used to detect ANAs. Clinically the most widely used method is indirect immunofluorescence (IF). The pattern of fluorescence suggests the type of antibody present in the people's serum. Direct immunofluorescence can detect deposits of immunoglobulins and complement proteins in the people's skin. When skin not exposed to the sun is tested, a positive direct IF (the so-called lupus band test) is an evidence of systemic lupus erythematosus.
Drug-Induced Lupus Erythematosus, like SLE, can affect many parts of the body. However, Drug-Induced Lupus is caused by an overreaction to certain medications. Studies have shown that removal of the medication may stop disease activity. Drugs most commonly connected with drug-induced lupus are those used to treat chronic conditions, such as seizures, high blood pressure or rheumatoid arthritis.
A general, imprecise, colloquial, and somewhat old-fashioned term for acute and chronic conditions marked by inflammation, muscle soreness and stiffness, and pain in joints and associated structures. It includes inflammatory arthritis (infectious, rheumatoid, gouty), arthritis due to rheumatic fever or trauma, degenerative joint disease, neurogenic arthropathy, hydroarthrosis, myositis, bursitis, and fibromyalgia.
In addition to hormonal mechanisms, specific genetic influences found on the X chromosome may also contribute to the development of SLE. Studies indicate that the X chromosome can determine the levels of sex hormones. A study has shown an association between Klinefelter syndrome and SLE. XXY males with SLE have an abnormal X–Y translocation resulting in the partial triplication of the PAR1 gene region.
Mixed connective tissue disease (MCTD) is a autoimmune disorder that causes overlapping features of three connective tissue disorders: lupus, scleroderma, and polymyositis. MCTD may also have features of rheumatoid arthritis. This condition is most often diagnosed in women in their 20’s and 30’s. Occasionally, children are affected. At this time the cause of this condition is unknown.
Doctors are tasked with interpreting test results, then correlating them with your symptoms and other test results. It's difficult when patients exhibit vague symptoms and clashing test results, but skillful doctors can consider all of these pieces of evidence and eventually determine whether you have lupus or something else entirely. This may take some time along with trial and error.
In lupus as the attack goes on, all the branches of the immune system join the fight. This leads to significant and intense inflammation. The cause of Lupus is unknown, as well as what drives its diverse presentation. We know that multiple factors are required, including: the “right” genetic makeup, environmental exposures, and organ specific characteristics. People with lupus may also have an impaired process for clearing old and damaged cells from the body, which in turn provides continuous stimuli to the immune system and leads to abnormal immune response.
In its simplest definition, the CBC is used to measure red and white blood cell count, the total amount of hemoglobin in the blood, hematocrit (the amount of blood composed of red blood cells), and mean corpuscular volume (the size of red blood cells). The CBC can also count additional blood cell types like neutrophils, eosinophils, basophils, lymphocytes, monocytes, and platelets.
Vasculitis, antiphospholipid antibodies, and renal failure are commonly found in patients with lupus; these conditions greatly increase the risk of developing pulmonary emboli. The diagnosis in a patient with shortness of breath, hemoptysis, and pleuritic chest pain is commonly made with ventilation-perfusion scans or computed tomography (CT) angiography. The CT angiogram demonstrates a filling defect in the left anterior segmental artery (arrow).
Heart and Lungs. Heart and lung involvement often is caused by inflammation of the covering of the heart (pericardium) and lungs (pleura). When these structures become inflamed, patients may develop chest pain, irregular heartbeat, and accumulation of fluid around the lungs (pleuritis or pleurisy) and heart (pericarditis). The heart valves and the lung itself can also be affected by lupus, resulting in shortness of breath.
SLE may cause pericarditis—inflammation of the outer lining surrounding the heart, myocarditis—inflammation of the heart muscle, or endocarditis—inflammation of the inner lining of the heart. The endocarditis of SLE is non-infectious, and is also called (Libman–Sacks endocarditis). It involves either the mitral valve or the tricuspid valve. Atherosclerosis also occurs more often and advances more rapidly than in the general population.
A. Lupus is a chronic disease in which a person's body is attacked by the immune system, which normally fights infections and foreign invaders, such as viruses and bacteria, said Gilkeson, a professor of medicine at the Medical University of South Carolina in Charleston. Lupus can cause a variety of symptoms, including severe fatigue, headaches, painful or swollen joints, fever, swelling in the hands or ankles, a butterfly-shaped rash across the nose and cheeks, sensitivity to light, mouth and nose ulcers, anemia and hair loss.
In general, cutaneous manifestations, musculoskeletal manifestations, and serositis represent milder disease, which may wax and wane with disease activity. These are often controlled with nonsteroidal anti-inflammatory drugs (NSAIDS) or low-potency immunosuppression medications beyond hydroxychloroquine and/or short courses of corticosteroids. More prolonged steroid use is generally reserved for patients with involvement of vital organs. For example, central nervous system involvement and diffuse proliferative renal disease must be recognized as more severe disease manifestations, and these are often treated with more aggressive immunosuppression. Evidence suggests a relative undertreatment of SLE patients with end-stage renal disease (ESRD), because the extent of lupus activity may be underestimated. 
Many people with lupus will have some form of a rash, says Roberto Caricchio, MD, the interim section chief of rheumatology at Temple University Hospital and director of the Temple Lupus Clinic in Philadelphia. According to the Lupus Foundation of America, as many as two-thirds of people with lupus experience a skin rash, and estimates suggest that between 40 and 70 percent of people with lupus will notice that their symptoms get worse in the sun or some types of artificial light. (2)
Lupus takes a long time to diagnose and all the emotional elements of dealing with other peoples misunderstanding adds to the negative feelings. There is really no way to avoid this, just know that you’re not alone in this. My wife has been dealing with Lupus for 30 years and yes there have been difficult times and doctors without understanding or empathy.
“My message to patients is that we can do an excellent job of managing the condition compared to 20 years ago,” says Roberto Caricchio, MD, the interim section chief of rheumatology at Temple University Hospital in Philadelphia and the director of the Temple Lupus Clinic at the Lewis Katz School of Medicine. With that said, people should never underestimate the serious effects lupus can have, he adds, which is why working with your doctor to manage the condition is so important.
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