decompensate

de- +‎ compensate

• (UK) IPA^(key): /diːˈkɒmpɛnseɪt/

decompensate (third-person singular simple present decompensates, present participle decompensating, simple past and past participle decompensated)

1. (medicine, psychology, of a bodily organ or mental state) To deteriorate in function due to an inability to invoke normal defensive mechanisms that compensate for ailments and other stresses.
   • 1967, Virginia Pidgeon, “The Infant with Congenital Heart Disease”, in The American Journal of Nursing, volume 67, number 2, page 291:

     The infant whose heart is decompensating has a rapid pulse, rapid respirations, and respiratory distress.

   • 1983, Nancy Scheper-Hughes, “A Proposal for the Aftercare of Chronic Psychiatric Patients”, in Medical Anthropology Quarterly, volume 14, number 2, pages 11-12:

     In some cases, the fragile individual, overwhelmed by the implicit demands and expectations for sociability, coherence, and "constructive" behavior, rapidly decompensates, taking flight into psychosis or protective withdrawal.

• decompensation