Hi there, well we would definitely need more info - how does the person act and feel while completing these rituals? as said above, what is the feeling if not allowed to complete them? What sorts of rituals and are they done quickly, slowly, and what is the person trying to prevent by doing them? what sorts of disasters are they afraid of?
some preliminary thoughts and possibilities depending on what is really going on
complete repertory)
MIND; THOUGHTS; persistent (K87, SI-1006, G70) (100)
MIND; ANXIETY; trifles, about (K8, SI-97, G7) (29)
MIND; MONOMANIA (K67, SI-760, G54) (35)
MIND; IDEAS; fixed (48)
MIND; DELUSIONS, imaginations; happen, that something terrible is going to (K26, SI-297, G22) MIND; FEAR; happen; something will (98) (4)
of course these would depend on the answers to the above questions!