In terms of seizures, it's worth noting that Robyn has not publicly discussed any personal experiences with epilepsy or seizures. However, the song's themes of emotional intensity and surrender could be seen as tangentially related to the experience of having a seizure, where one's body and mind are taken over by a sudden, intense episode.
While there isn't an official Robyn song titled "I Feel Myself" that explicitly references seizures, the connection likely stems from fan interpretations of her 2018 track ifeelmyself robyn seizure