LANCE Franklin’s fiancée Jesinta Campbell has praised the Swans forward's 'strength and courage' in her first public comments since revelations about his mental illness.

On Tuesday, the Swans revealed Franklin was battling both a mental health condition and mild epilepsy.

The 28-year-old has been granted indefinite leave, and won't play in Sydney's qualifying final against Fremantle in Perth on Saturday afternoon.

Campbell, who's on assignment for a TV travel program in Japan, wrote a lengthy post on social media on Thursday, declaring how proud she was of her partner.

“I would like to thank everyone for the support both Bud and I have received over the past few days," Campbell posted on Instagram.

"This is an extremely challenging time for us and has been for some time now, however it has been made easier by the love, understanding and support we have been given.

It can happen to anyone

"Thinking of the many others who also live with this everyday and are not as fortunate to have the support we do.

“I am incredibly proud of Bud’s strength and courage, this has not been an easy journey.

Campbell also expressed gratitude towards the club and the pair's celebrity agent, Sharon Finnigan.

Lance Franklin's battle with mental illness, epilepsy 

"I am thankful for the support of the Sydney Swans, both of our families, friends and Sharon.

"We are not alone in this. My heart is with my man.

"The only thing I ask is that everyone respect our privacy at this time.”

Anyone seeking counselling or help with mental health issues can contact or call 1300 224 636