The 63-year-old - who tied the knot to the EastEnders legend in 2000 - bravely spoke honestly about his struggles on Wednesday's episode of Natalie Cassidy: Caring Together.
Scott, 62, became a carer for the EastEnders actress in 2014 when she fell ill with the disease and the pair were married for 20 years before her death in 2020.
The actor's agent, 62, went public with their relationship last year, having grown close while campaigning together for dementia awareness following Barbara's diagnosis with Alzheimer's.
Dame Barbara Windsor's widower Scott Mitchell has shared he 'still wakes up in panic' worrying about the late star, like he did when she was still alive.