Causality in the Intentionality Model is in the agency of the child. It is the child who perceives, who apprehends, who constructs the intentional state, who acts to express it, and who interprets what others do (including what they say) to construct a new intentional state.
Nortriptyline, sold under the brand names Allegron, Aventyl, Noritren, Nortrilen, and Pamelor among others, is a tricyclic antidepressant (TCA) used to treat clinical depression. Another licensed use for it is in the treatment of childhood bedwetting. Off-label uses include chronic pain and migraine and labile affect in some neurological disorders.
Rated Nortriptyline (Pamelor) for Neuropathic Pain Report . Prescribed for me for IBS-D and pain, 1 pill a day at 50mg. I'm practically pain-free and it has limited the constant trips to the bathroom (went from 6-10 times a day to twice a day). I do experience some insomnia and once in awhile dry mouth, but I'll take those over the IBS-D symptoms.