Gerald Dworkin, PhD, Professor of Philosophy at the University of California at Davis, wrote in the chapter "Public Policy and Physician-Assisted Suicide," that appeared in the 1998 book Euthanasia and Physician-Assisted Suicide:

Since one does not want to condone all physician-assisted suicides, one needs further criteria… The restriction to cases of terminal illness, while an effective way to draw the line, does not allow relief to many individuals who are suffering but not terminal. Someone with ‘locked-in’ syndrome–totally paralyzed but fully conscious–is an example of this situation.”