## 4 Discussion  
Our findings were in agreement with our initial hypothesis since the intensity of photophobia and photophobia reported during daily activities were greater in migraine individuals, especially those with aura and chronic migraine, than controls. Also, for some activities, migraineurs with aura and chronic migraine were more affected than migraineurs without aura, and both photophobia and phonophobia were correlated to migraine intensity, migraine frequency, and frequency of aura. Interictal photophobia and phonophobia have been studied previously ([PERSON] et al., 2016; [PERSON] et al., 2017; [PERSON] et al., 2018; [PERSON] et al., 2018), but our study was the first one to investigate the presence and intensity of these symptoms during daily activities in patients with different subtypes of migraine, during the headache-free period. It adds new insights into sensory hypersensitivity maintained out of the headache phase, which may differ according to the migraine subtype. According to our findings, individuals with migraine exhibit moderate to intense levels of discomfort, while controls reported discomfort levels ranging from mild to moderate. In addition, as photophophophobia can act as triggers for migraine attacks ([PERSON] et al., 2018), patients who have greater interictal sensitivity to visual and auditory stimuli may be more susceptible to new attacks. Although photo- and phono-phobia were reported by most of the patients with migraine, individuals with aura and high frequency of attacks were more affected interictal  
\begin{table}
\begin{tabular}{c c c} \hline \hline  & **Photophobia Intensity (0–40)** & **Phonophobia Intensity (0–40)** \\ \hline Intensity of migraine attacks (0–10) & 0.24 (0.05 to 0.41) 1 [FOOTNOTE:1]Footnote 1: \(p\) < 0.01, 1 [FOOTNOTE:1]Footnote 1: \(p\) < 0.05 vs. controls; 1 [FOOTNOTE:1]Footnote 1: \(p\) < 0.05 vs. moriç  
A recent study explored photophobia and phonophobia in migraine subtypes [16], but the questionnaires used did not assess the symptoms in daily activities, and also did not specifically refer to the ictal period or the interictal period, making it difficult to assign the results to the interictal period. In the referred study [16], the authors observed an association between photophobia and migraine aura and chronic migraine, but the phonophobia was associated with chronic migraine only. Our results observed higher photophobia and phono-phobia intensity in both groups, migraine with aura and chronic migraine, compared to controls. With our methodological design, we have addressed efforts to emphasize that our questions referred to the headache-free period. The interictal higher sensitivity to innocuous visual and auditory stimuli exhibited by patients with aura and chronic migraine can indicate altered sensorial processing in these groups. Interictal hypersensitization has also been described for other sensory stimuli. Cutaneous allodynia, the perception of pain or discomfort in response to innocuous thermal and/or mechanical stimuli applied to the skin, is a common phenomenon among migraineurs [26]. Although cutaneous allodynia is commonly remarkable during the ictal period, migraineurs also exhibit lower mechanical pain threshold and thermal pain threshold interictally [4]. Also, interictal cutaneous allodynia is associated with the frequency of migraine attacks [16]. Similarly, patients with chronic migraine present more interictal photophobia [16; 27] and phonophobia [3; 16], and our results reinforce it. It has been speculated that increased sensory sensitivities in chronic migraine might reflect a chronic central sensitization similar to the mechanism proposed for cutaneous allodynia [27]. Gathering these findings together suggested that chronic migraine is linked to a multimodal sensory hypersensitivity. Regarding the presence of aura, [PERSON] et al. [14] and [PERSON] et al.