i read a book about schizoid children once. one of the most interesting terms i picked up was “selective mutism” - a disorder where someone simply refuses to speak. its gone through a few names, previously “elective mutism”, and originally the highly poetic “aphasia voluntaria”.

(evidence of his bardship from early last year): https://hell.twtr.plus/media/8bfc07087b9705596f237b79ec7aa4afdbc4c25dc9e37886f549203591642013.file