Psoriasis is the most common auto-immune disease, affecting as many as seven and a half million Americans. Past research has linked the chronic condition to diabetes and heart disease.
In a new study of more than 9,000 psoriasis patients , doctors found as the severity of the skin disease increased, so did the patients' chances of lung disease, diabetes, liver disease, and heart attack .
Researchers suspect the link between psoriasis and these other illnesses is inflammation.
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.