Can Belotero/Juvederm cause hives all over my body? (Photo)

I do not think that filler injections would cause hives especially a month after injections.  Most hives are idiopathic, meaning there is no known cause or it is due from a recent viral or bacteria infection like a cold or sinusitis.  I suggest going to see a dermatologist for hive workup.  Starting antihistamines or oral steroids would be helpful at this time.  Best, Dr. Emer.  

The timing of the occurrence of hives is not likely to be the hyaluronic acid filler (e.g. Belotero). you received the Belotero 2 months prior to the injectable filler. If you had developed it immediately or within a day, one could have assumed they were related. 

I agree with Dr. Emer that it is very very unlikely that the hives have anything to do with the filler injection and that the 2 events are merely coincidentally related. The hyaluronic acid component of the filler is shared by every species on the planet, so it is impossible to react against it. Sometimes residual products (chemicals) from the manufacturing process can lead to local effects in the skin, but even that is extremely rare.