Can radiesse cause rosacea?

It sounds like you are having complications related to the injections being placed high in the dermis (Radiesse is for a deeper plane). Redness also suggests something more serious, so please return to your injector to handle the problem. If the injector was not a board certified dermatologist or plastic surgeon, I would seek a second opinion from someone in those 2 fields.

I don't know of any case reports linking rosacea to any filler injections, let alone Radiesse (hydroxyapetite). If you have experienced granuloma formation close to the surface of the skin there are low-dose steroid injections that can soften or dissolve these superficial deposits.This answer is not intended to give a medical opinion and does not substitute for medical advice. The information presented in this posting is for patients’ education only. As always, I encourage you to see your personal physician for further evaluation of your individual case.

Radiesse cannot cause rosacea. If you have white spots that means the Radiesse was injected too superficially and the product is showing through. (It doesn't "come" to the surface but it's actually injected too superficially.) The heat though concerns me and could be sign of some infection. I would suggest you return to your injector for an exam because the bottom line is that rosacea isn't from Radiesse. "This answer has been solicited without seeing this patient and
cannot be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."