Sensory phenomena, although highly distressing [95], associated with increased obsessive-compulsive and tic severity [73, 75, 95] and reduced quality of life [95], are infrequently considered as outcomes in treatment trials [96]. However, a recent study reported reductions in not-just-right experiences alongside reduced contamination obsessions in OCD patients following ERP [97]. Furthermore, habit-reversal training (Table 3), an effective behavioral therapy for tic symptoms used in TS, targets sensory phenomena and has been shown to reduce premonitory urges as well as tic symptom severity in adults with TS [98–99]. Habit-reversal therapy works by breaking tic “habits” by training patients to recognize the sensory urges that precede tics and to perform a less obtrusive and more voluntary behavior in place of the tic. A neuroimaging study reported significantly reduced activity in the putamen following habit-reversal training in patients with TS, suggesting that this form of therapy works (at least in part) by normalizing atypically increased sensorimotor circuit activity associated with excessive habit formation [100]. Habit-reversal therapy is similar to the response prevention aspect of ERP (Table 3) in that both aim to break
