The Fareham politician is backing the event organised by the Alzheimer’s Society which started on Monday.
The awareness week aims to increase understanding of dementia and to highlight services offered by the charity.
Last year Miss Fernandes underwent dementia training as part of a national campaign to raise awareness of the disease and its effects.
Her training took place at the Lockswood Care Centre in Locks Heath and was part of the dementia friends’ initiative.
She said: ‘Increasing awareness and improving care for people with dementia is vital to reduce the feelings of isolation that can often result, so this week is very important.
‘It’s great that there are now over a million people signed up as dementia friends, and I would urge as many people as possible to do the same.’
Last year, The News launched its Take Care Together campaign which has seen 1,300 people sign up to become a dementia friend.