What is the purpose of trepanation?

Answer 1

In standard medical practice, trepanation is occasionally performed by a neurosurgeon in order to relieve pressure on the brain caused by trauma, or to remove a blood clot from brain tissue.

Answer 2

Trepanation is a surgical procedure involving drilling a hole in the skull. Historically, it was used to treat various medical conditions such as head injuries, epilepsy, and migraines by relieving pressure in the brain or allowing evil spirits to escape. Today, trepanation is rarely performed and is considered a controversial and outdated medical practice.