Cancer Risk in Patients with Alopecia Areata: A Nationwide Population-Based Matched Cohort Study
March 2018
in “
Cancer Medicine
”
TLDR Alopecia areata patients have varied cancer risks, with some cancers being lower and others higher.
The nationwide population-based matched cohort study investigated cancer risk in 162,499 patients with alopecia areata (AA) from 1997 to 2013. The study found no increased overall cancer risk in AA patients compared to the general population. However, AA patients had significantly lower risks for nonmelanoma skin cancer, upper GI cancer, liver cancer, and uterine and cervix cancer. Conversely, they had higher risks for lymphoma, breast cancer, and kidney and urinary bladder cancer, with female AA patients under 50 years old showing an even higher risk for breast cancer. The study concluded that cancer risk in AA patients is organ-specific and not associated with underlying autoimmune disorders, suggesting routine screenings for early detection of specific cancers.