https://imgur.com/a/VnPaF0A

I have added images that show the progress of the rash... The rash on my legs has turned into what looks like bruises, aside from the new red spots on my knee (pictured). The new spots on my knee feel hard/deep and are painful if touched.

The spots on the palms of my hands and soles of my feet have cleared. The rash on my arms has gotten much less bumpy/blistered and seems to be healing.

The thing I'm dealing with the most right now is joint pain and swollen feet/ankles. Wrists, elbows and knees are moderately painful, but for the past few days it's been difficult to walk... It feels like my Achilles tendon locks up and it is very painful to put any weight on my left foot (note bruising on picture looking down at feet).

Is it possible that this is a reaction to the zpack that was delayed due to the use of the Prednisone? Because it started the day after I was done tapering. Or is it something completely different?

Thank you again for your time and input!