Nick Cannon is in hospital battling pneumonia.
The ex-partner of Mariah Carey, 42, who is expecting his 12th child, was rushed to A&E just hours after performing to a sold out crowd at Madison Square Garden in New York.
Nick shared a picture from his hospital bed looking rundown as he told fans he's "not superman".
The star, who was diagnosed with lupus in 2012, captioned the snap in which he's wearing a mask, beanie and hooked up to a machine: "Okay, so I guess I’m not Superman… I promised myself I would never be back at this place again…
"But this is a great lesson to take care of YOU or YOU won’t be able to take care of everyone else. Don’t trip though, I don’t need any well wishes or prayers , just some solid rest and I will be back on the journey to becoming stronger than ever…
"It’s just pneumonia, nothing I can’t handle. Crazy thing is, last night we was just rocking a sold out crowd at Madison square garden in front of thousands of fans, now I’m all alone in a tiny hospital room.
"Life is definitely a rollercoaster! #LupusWarrior."
The performer's showbiz pals sent messages of support following Nick's post with DJ Jazzy Jeff writing in the comments: "Man don’t play with that…sending you good vibes my brother!!!"
While actor Marlon Wayans posted: "Get well soon."
Nick's health scare comes as the star prepares to welcome another baby with Alyssa Sott.
The star's ex, Abby De La Rosa welcomed his 11th child recently.
Sending her support following Nick's recent health scare, Abby wrote: "Believing in gods healing hand over you, Prayers up for a real life superhero @nickcannon! We all need you," adding a prayer emoji.
Nick shares twins Moroccan and Monroe with singing sensation Mariah Carey, as well as Golden, Rise and Powerful with Brittany Bell.
His shares daughter Onyx, who was born in September, with LaNisha Cole while Bre Tiesi gave birth to the star's son Legendary in July.
Abby gave birth to baby girl Beautiful Zeppelin Cannon last month.
She also shares twins Zion and Zillion with the Masked Singer host.
