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Systemic Lupus Erythematosus

Systemic lupus erythematosus
Lupusfoto.jpg
Young woman with the typical "butterfly rash" found in lupus
Pronunciation Listeni/sɪˈstɛmɪk ˈlpəs ˌɛrɪθməˈtsəs/
Classification and external resources
Specialty Rheumatology
ICD-10 M32
ICD-9-CM 710.0
OMIM 152700
DiseasesDB 12782
MedlinePlus 000435
eMedicine med/2228 emerg/564
Patient UK Systemic lupus erythematosus
MeSH D008180
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Systemic lupus erythematosus (SLE), also known simply as lupus, is an autoimmune disease in which the body's immune system mistakenly attacks healthy tissue in many parts of the body. Symptoms vary between people and may be mild to severe. Common symptoms include painful and swollen joints, fever, chest pain, hair loss, mouth ulcers, swollen lymph nodes, feeling tired, and a red rash which is most commonly on the face. Often there are periods of illness, called flares, and periods of remission when there are few symptoms.

The cause is not entirely clear. It is believed to involve hormonal, environmental, and genetic factors. Among identical twins, if one is affected there is a 24% chance the other one will be as well.Female sex hormones, sunlight, smoking, vitamin D deficiency, and certain infections, are also believed to increase the risk. The mechanism involves an immune response by autoantibodies against a person's own tissues. These are most commonly anti-nuclear antibodies and they result in inflammation. Diagnosis can be difficult and is based on a combination of symptoms and laboratory tests. There are a number of other kinds of lupus erythematosus including discoid lupus erythematosus, neonatal lupus, and subacute cutaneous lupus erythematosus.


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