Hi and thank you for your question! As my colleagues have stated, the rare but problematic complication of filler injection is vascular compromise and occlusion. Given the description you provide, I highly doubt that it is related to direct injection of filler into an artery as it tends to cause immediate whitening/blanching and lead to other signs and symptoms. The other scenario which is more likely that direct occlusion is that once the filler injection, the filler and the swelling around it cause some pressure on the blood vessels nearby. For the nose, the superficial arteries run from top to the tip, so filler/swelling in the bridge or back of the nose can possibly put some pressure on the arteries causing the blood flow reaching the tip to go down. If that’s the case, we can dissolve some of the filler with enzyme injection to relieve the pressure alongside with other steps (vasodilators, etc). Please note that these are all general comments and it is impossible to make a determination for an individual patient like this, hence, I highly recommend that you do a quick follow up with your doctor to make sure and stay safe. I hope it helps and good luck!
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