Lupusis an autoimmune disease and is not contagious.Autoimmune diseasesare characterized by a malfunction of your immune system.
Hence, they cause damage to healthy tissues and organs.
Environmental factors, such as certain drugs and infections, may trigger the disease in genetically predisposed individuals.

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While we know lupus causes the immune system to create antibodies against itself,what causes lupusis still unknown.
There are three main risk factors for lupus: sex, race, and age.
Although lupus affects people of all ages, it mostly affects people between 15 and 44 years old.
Potential Triggers
Lupus is a disease that presents with a variable clinical course.
In other words, lupus waxes and wanes and occurs in bouts.
Although the development of lupus is likely rooted ingenetics, environmental factors can exacerbate or trigger this illness.
For example, immunosuppressants inhibit the immune system and can result in infection.
They will likely refer you to a rheumatologist for further testing.
to diagnose lupus, your healthcare provider will order several different blood tests.
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What is Lupus?Lupus Foundation of America.