" After all, a terrible anxiety attends chronic illness. Over time, it becomes difficult to untangle the suffering from symptoms like pain from the suffering inflicted by the anxiety over the possibility of more pain, and worse outcomes, in the future. This does not mean that the illness is in the mind; rather, the mind—that machine for making meaning—makes endless meanings of its new state, which may themselves influence the experience. "

― Meghan O'Rourke , The Invisible Kingdom: Reimagining Chronic Illness