Yeah, there was also a thing called an ice-pick lobotomy. It was very popular throughout the mid 1900s (think 40s and 50s) as a way of (if we're being cynical) making peoblematic mental illness cases go away, as well as a way of treating seizures.

The procedure was pretty simple and "safe": it's just a small tool they inserted through the eye socket on the inner side of your eye (your eye would be fine) to reach the connective tissue between your hemispheres, and they'd swich it arround until large portions of this connective tissue (and also your frontal lobe) were severely damaged.

This was done in essentially outpatient settings, and the doctor that invented it was highly prolific, and did like thousands of these procedures over the years: most to people who shouldn't be treated with brain surgery. It usually left people halfway between mildly impared and vegetable, but it did frequently "cure" the worst symptoms of a lot of mental illnesses by essentially erasing half their personality.

I'm grossly oversimplifying here but it was nasty business. Not medicine's best chapter

Edit: more ethical versions of this survived the ice pick lobotomy era, for specifically only seizure treatments that had fewer adverse side effects, although it's a very radical treatment for pretty severe cases as I understand it