Granulomas vs filler deposits - how to differentiate?

I had 2 ml Restylane injected into the dermis on my neck on May 19. There have been lumps all over it since then and the skin is itching. Is it easy for s doctor to differentiate if the lumps are granulomas or filler deposits that will reabsorb as time passes by? Do granulomas disappear on their own? Thank you.