A tolerated illness is a "noted discordance between subjective and objective health measures" in a patient.
Native American communities have been shown to have a high incidence of illness tolerance, in part because of the treatment they receive in the healthcare system. In psychopathology, distress tolerance describes "perceived capacity to withstand negative emotional and/or other aversive states".
In nature, the immune system of plants has been shown to protect against pathogens through a strategy of tolerance. This defense "decreases the host susceptibility to tissue damage, or other fitness costs, caused by the pathogens or by the immune response against them".
References
Native Americans Feel Invisible In U.S. Health Care System Whitney, Eric, NPR, 2017 Distress Tolerance and Psychopathological Symptoms and Disorders: A Review of the Empirical Literature among Adults Teresa M. Leyro, Michael J. Zvolensky, and Amit Bernstein, Psychol Bull., 2010 Disease Tolerance as a Defense Strategy Ruslan Medzhitov, David S. Schneider, and Miguel P. Soares, Science, 2012 TOLERATED ILLNESS™ concept and theory for chronically ill and elderly patients as exemplified in American Indians Moss, Margaret P., University of Buffalo, 2005