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What causes lupus?

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It starts when your immune system -- your body's defense against germs -- attacks your own organs and tissues. The disease causes inflammation and can affect different parts of your body, including your heart, skin, brain, and blood cells.

SOURCES:

Mayo Clinic: "Psoriatic arthritis: Causes," "Psoriatic arthritis: Symptoms," "Lupus: Definition," "Lupus Tests and Diagnosis."

Lupus Foundation of America: "How is lupus diagnosed?"

Lupus Research Alliance: "Lupus Diagnosis."

Arthritis Foundation: "What is Arthritis?" "Psoriatic Arthritis Symptoms," "Psoriatic Arthritis Diagnosis."

American College of Rheumatology: "Antinuclear Antibodies (ANA)."

Reviewed by Carol DerSarkissian on October 28, 2018

SOURCES:

Mayo Clinic: "Psoriatic arthritis: Causes," "Psoriatic arthritis: Symptoms," "Lupus: Definition," "Lupus Tests and Diagnosis."

Lupus Foundation of America: "How is lupus diagnosed?"

Lupus Research Alliance: "Lupus Diagnosis."

Arthritis Foundation: "What is Arthritis?" "Psoriatic Arthritis Symptoms," "Psoriatic Arthritis Diagnosis."

American College of Rheumatology: "Antinuclear Antibodies (ANA)."

Reviewed by Carol DerSarkissian on October 28, 2018

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What can trigger lupus?

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