The presenter - who announced on Twitter that she was suffering from whiplash after rehearsing a jive routine with her dance partner James Jordan - told BBC Radio One that she will be performing tonight (October 13), despite her injury.
"We do lots of spinning," she told host Vernon Kay. "On Thursday morning (October 11) we danced it flat out then afterwards I was taken to the doctors.
"I'm still in pain but with the adrenaline and my nerves I'll probably forget about it. It's such a brilliant routine when it's done properly!"
On Thursday, Jordan - who himself suffered a broken nose during last week's rehearsals - tweeted an apology to Van Outen and explained that the pair had been training hard.
"I'm actually feeling quite bad now!" he said. "Was really tough on @denise_vanouten this morning... Until her neck really went... I'm sorry!! #feelbad"
Van Outen said yesterday (October 12) that it was "touch and go" whether she would be able to perform, but has kept her Twitter followers updated on her recovery.
"Going through the jive in the kitchen," she posted yesterday evening. "Being careful with my dodgy neck though #drivingmyhubbycrazy."
Van Outen is the first contestant to pick up an injury this series. In contrast, three professionals - Jordan, Johnny Ball's dance partner Aliona Vilani and professional Artem Chigvintsev - have been suffering from bruises and broken bones, possibly as a result of the introduction of a new choreography team.
Strictly Come Dancing continues tonight at 6.30pm on BBC One. Tomorrow (October 14), the first couple will be eliminated from the competition.
Watch Denise and James's waltz from last week's show below: