The veteran news anchor shared the experience in a Substack post titled 'The Day I'll Never Remember.'

The veteran journalist was afflicted with transient global amnesia, which can cause sudden memory loss that can be rectified within hours.

Katie Couric says she experienced Transient Global Amnesia in June, which first prompted the journalist's family to believe she had a stroke.

She was later diagnosed with transient global amnesia.

The veteran news anchor shared the experience in a Substack post titled 'The Day I'll Never Remember.'