"The medical people have said my condition could worsen quickly. I do not know any more," he said on Wednesday's programme shown on Nederland 3.
Ricksen appeared over 180 times for Scottish club Rangers between 2000 and 2006 and captained them to the title in 2005. He also won the Russian Premier League title with Zenit and was part of their UEFA Cup-winning squad in 2008.
He retired from football at the end of last season while playing with Fortuna.
(Reporting by Josh Reich; Editing by Alison Wildey)
