personality change

She said she’d had it together when she was younger, and she loved her restaurant jobs, but felt as though she underwent a personality change after her health deteriorated.

It does not always have obvious physical symptoms, but it results in cognitive decline coupled with behavioural symptoms including anxiety, loss of inhibition, personality change, and impaired judgment.

Stephanie, the president’s Nervous Nellie secretary, undergoes a personality change after dipping into Bernadette’s bag of pills.

Her personality change is like that from the malevolent Gollum into kittenish Sméagol in The Lord of the Rings.

Her personality change was unnerving and her uncharacteristic defiance sometimes embarrassing.