48. Person under a disability.
(1) For the purposes of this Act, a person shall be under a disability while -
(a) he is an infant, or
(b) he is of unsound mind.
(c) [deleted]
(2) For the purposes of subsection (1) of this section but without prejudice to the generality thereof, a person shall be conclusively presumed to be of unsound mind while he is detained in pursuance of any enactment authorising the detention of persons of unsound mind or criminal lunatics.