Exceptional circumstances
29.—(1) A claimant who does not have limited capability for work as determined in accordance with the limited capability for work assessment is to be treated as having limited capability for work if paragraph (2) applies to the claimant.
(2) This paragraph applies if—
(a)the claimant is suffering from a life threatening disease in relation to which—
(i)there is medical evidence that the disease is uncontrollable, or uncontrolled, by a recognised therapeutic procedure; and
(ii)in the case of a disease that is uncontrolled, there is a reasonable cause for it not to be controlled by a recognised therapeutic procedure; or
(b)the claimant suffers from some specific disease or bodily or mental disablement and, by reasons of such disease or disablement, there would be a substantial risk to the mental or physical health of any person if the claimant were found not to have limited capability for work.