Can you catch lupus from someone else?

No, lupus is not contagious. You cannot catch it from someone else through touch, kissing, blood, saliva, or any other form of close contact.¹²³

What is Lupus?

• Autoimmune Disease: Lupus is a chronic autoimmune condition where the body’s immune system mistakenly attacks healthy tissues and organs, such as the skin, joints, kidneys, or heart.¹²
• Not Infectious: Unlike colds, flu, or bacterial infections, lupus is not caused by a pathogen (virus or bacteria), meaning it cannot spread between people.¹
• Causes: Research shows that lupus develops from a complex combination of genetic, hormonal, and environmental factors (such as ultraviolet light or certain viral triggers).¹²

You can learn more about symptoms and guidance through the NHS Lupus Guide or the Lupus Foundation of America.¹²

If you or someone you know is exploring symptoms, tell me:

• What specific symptoms or concerns are you noticing?
• Are there any family members with autoimmune conditions?

I can help you understand what questions to ask a doctor.

No, lupus is not contagious . You cannot catch it from another person through physical contact, kissing, sex, or sharing a household.¹

What Actually Causes Lupus?

Lupus is an autoimmune disease, which means the immune system mistakenly attacks healthy tissue and organs instead of protecting them. It develops from a combination of underlying triggers rather than an infection or virus:¹

• Genetics: It can run in families, and researchers have tied dozens of specific genes to a higher susceptibility, though having them doesn't guarantee you will get it.¹
• Environmental Triggers: Certain outside factors can activate the condition in people who are already genetically prone to it. These include:
  • Ultraviolet (UV) light (sun exposure)
  • Infections (such as the Epstein-Barr virus)
  • Certain medications or chemical exposures¹
• Hormonal Factors: It occurs much more frequently in women (especially during childbearing years), pointing to a strong hormonal influence.¹

For a deeper breakdown of how the condition develops, you can read the Healthline Guide on Lupus Causes and Contagion.

If you're asking because you or someone you know was recently diagnosed, or if you're tracking specific symptoms, let me know—I can share more details on common warning signs or what to expect.

No. Lupus is not contagious, so you cannot catch it from another person.

You cannot get lupus through:

• Hugging, kissing or touching someone.
• Sharing food, drinks or cutlery.
• Sexual contact.
• Coughing or sneezing.
• Sharing a home or being around someone with lupus.

What causes lupus?

Lupus is an autoimmune disease. This means the immune system mistakenly attacks healthy parts of the body instead of protecting them.

The exact cause isn't fully understood, but factors can include:

• Genetics and family history.
• Hormonal factors.
• Environmental triggers, such as sunlight or certain infections.

Can lupus run in families?

Yes. There can be a genetic predisposition to lupus, meaning family members may have a higher risk, but it isn't directly inherited in a simple way.

❤️ If you're asking because someone close to you has lupus, you don't need to worry about catching it from them.