A "debilitating illness" refers to a severe or serious sickness that greatly weakens or impairs a person's physical or mental abilities, making it hard for them to function normally. Full definition
This article is a raw look at the emotions of guilt and shame experienced by those of us with debilitating illnesses or conditions. (upbeatliving.net)
The chemicals released in this waste stream can cause cancer, damage to the nervous system, heart and lung problems and other debilitating illness. (earthjustice.org)
Perhaps the loss of her father, and her own debilitating illness, helped keep her faith strong and her writing persistent. (religion-online.org)