Psoriasis Cases Surge in Wealthy Regions, Study Reveals Alarming Trends

A recent analysis published in JAMA Dermatology highlights a troubling increase in the incidence of psoriasis, particularly in wealthier regions around the world. The study examined data from 236 countries and found that between 1990 and 2021, the rate of psoriasis rose by more than 10% for men and over 7% for women. Globally, the number of cases surged from 23.1 million in 1990 to 43 million in 2021, representing an 86% increase.

The analysis indicated that countries in North America and Western Europe reported the highest incidences of psoriasis. Projections suggest that these regions will continue to see the highest number of new cases by 2050. In the United States alone, over 7.5 million adults are currently living with this chronic skin condition. Psoriasis is believed to stem from an overactive immune system, which causes skin cells to proliferate at an accelerated rate, resulting in red, scaly, itchy patches commonly found on areas like the elbows, knees, and scalp.

Researchers propose several theories as to why wealthier regions may experience a greater burden of psoriasis in the future. One possibility is that individuals in high-income areas, such as affluent cities in the United States and Europe, are more likely to report their symptoms and receive appropriate diagnoses from medical professionals.

Another theory aligns with the hygiene hypothesis. This concept suggests that the rise in allergic and autoimmune disorders in modern, affluent societies is linked to overly sanitized environments that limit exposure to certain microbes and parasites, potentially leading to weaker immune responses.

Prominent figures such as Kim Kardashian, age 45, and her mother Kris Jenner, age 70, have publicly shared their experiences with psoriasis, underscoring the condition’s prevalence in society. A family history of psoriasis significantly increases the likelihood of developing the disease, and factors such as infections (like strep throat), skin injuries, and exposure to air pollutants can also heighten risk.

Research published in the Journal of Investigative Dermatology has identified a correlation between excess belly fat and psoriasis, particularly among women. While there is currently no known cure for psoriasis, various treatment options—including topical creams, biologic medications, and light therapy—can help manage symptoms effectively.

The findings from this analysis serve as a stark reminder of the growing health challenges faced by affluent populations. As the incidence of psoriasis continues to rise, increased awareness and proactive management strategies will be essential in addressing this persistent inflammatory skin disease.