Are T cells in psoriasis linked to cancer risk?
It's a thoughtful question! The relationship between T cells, psoriasis, and cancer is complex and not entirely straightforward.
In psoriasis, your T cells become overactive and mistakenly attack healthy skin tissue. You have more T cells in your skin than usual, and the Show Full Answer
Are T cells in psoriasis linked to cancer risk?
It's a thoughtful question! The relationship between T cells, psoriasis, and cancer is complex and not entirely straightforward.
In psoriasis, your T cells become overactive and mistakenly attack healthy skin tissue. You have more T cells in your skin than usual, and the immune system's "off switches" (like regulatory T cells) don't work as well as they should.
The possible connection to cancer involves a few factors:
Chronic inflammation: The persistent inflammation from psoriasis can damage DNA over time, potentially creating an environment where cancer cells might develop more easily. This isn't unique to psoriasis - other inflammatory conditions show similar patterns.
Treatment effects: Some psoriasis treatments that calm down your overactive immune system (immunosuppressants) may slightly increase cancer risk because they reduce your body's ability to fight off abnormal cells.
Important to note: Psoriasis itself doesn't cause cancer, and having overactive T cells doesn't directly lead to cancer. Research shows possible associations with certain cancers like lymphoma and nonmelanoma skin cancer, but having psoriasis doesn't mean you'll develop cancer.
Talk with your dermatologist about your individual risk factors and which treatments might be safest for you.
November 5, 2025