“…7 In some cases, despite stable and well-controlled background pain, breakthrough cancer pain (BTcP) can occur spontaneously or in response to a trigger. 8 In this case, opioids providing rapid analgesia are commonly given as needed in addition to the background analgesic medication, such as oral opioids and nasal/transmucosal preparations of fentanyl, also named rapid-onset opioids (ROO). 9 Furthermore, if necessary, it is possible to combine adjuvant drugs at any step of WHO ladder, including tricyclic antidepressants, serotonin norepinephrine-reuptake inhibitors, gabapentinoids, lidocaine 5% patches or later-line adjuvants (eg, older anticonvulsants, corticosteroids, and N-methyl-D-aspartate [NMDA] receptor antagonists) that may help some patients.…”