Not the original commenter, but my understanding is that it’s used for severe depression when other treatments have been unsuccessful, so sort of a last resort. And apparently it’s fairly effective iirc, especially when compared to other treatment options (e.g., antidepressants).

I’m curious as to whether having a seizure disorder would correlate with lower depression rates, or if electroshock-induced seizures may lead to higher chances of having non-induced seizures in the future.