Nick Cannon has been hospitalised with pneumonia.

The "Masked Singer" host posted a photo of himself in a hospital bed, wearing a face mask, gown and beanie.

The father who has welcomed 11 kids with 2 on the way casually revealed his diagnosis to his millions of Instagram fans, "It's just pneumonia, nothing I can't handle. Okay, so I guess I'm not Superman."

Then Nick became more serious, making a veiled reference to his 10-year battle with the autoimmune disease lupus, "I promised myself I would never be back at this place again, great lesson to take care of YOU or YOU won't be able to take care of everyone else."