43.—(1) The following provisions apply to an assessment under this Part.
(2) The claimant is to be assessed as if the claimant were fitted with or wearing any prosthesis with which the claimant is normally fitted or normally wears or, as the case may be, wearing or using any aid or appliance which is normally, or could reasonably be expected to be, worn or used.
(3) If a descriptor applies in the case of the claimant as a direct result of treatment provided by a registered medical practitioner for a specific disease, illness or disablement, it is to be treated as applying by reason of the disease, illness or disablement.