They say money doesn’t buy happiness. And for some, it also can’t buy skin health.
One persistent, inflammatory skin disease has become a growing problem across the globe, especially in wealthier areas, according to a new analysis of 236 countries.
In JAMA Dermatology last week, researchers in China warned that the incidence rate of psoriasis increased more than 10% for men and over 7% for women between 1990 and 2021.
Globally, cases jumped by 86%, from 23.1 million in 1990 to 43 million in 2021.
North America and Western Europe — two wealthier regions of the world — reported the highest incidences and are projected to have the most new cases by 2050.
Over 7.5 million US adults have psoriasis, which is believed to be caused by an overactive immune system.
Skin cells build up much faster than they should, triggering symptoms like red, scaly, itchy patches, commonly on the elbows, knees and scalp.
While flare-ups can be brought on by stress, weather or other health conditions, the researchers have theories as to why wealthier areas could be more affected in the future.
High-income regions, like wealthy US and European cities, may have more people willing to report their symptoms and more doctors properly diagnosing cases.
Another theory is tied to the hygiene hypothesis.
This hypothesis suggests that the increased number of allergic and autoimmune disorders is due to the ultra-clean conditions of modern, high-income societies, which reduce exposure to certain microbes and parasites and lead to weaker immune systems.
Even billionaire Kim Kardashian, 45, and mom Kris Jenner, 70, have it.
Having a family history of psoriasis significantly increases the likelihood you’ll develop the condition.
Infections like strep throat, skin injuries and exposure to air pollutants can also up the odds.
A study in the Journal of Investigative Dermatology found a link between excess belly fat and the chronic skin condition, with the connection being particularly strong in women.
There’s no known cure for psoriasis, but topical creams, biologic medications and light therapy can help manage symptoms.
