Odd mysterious bumps

Ok guys I need help... I've been trying and trying to get rid of these bumps but they keep spreading, and I cannot find anything on the internet about them. They also have wrapped around his front left leg and are now underneath him. Anybody have any idea what they are? New ones show up dark grey then swell, they swelling goes down and a large bump is left, then the bump goes down and it looks lumpy and stays... Then the process starts all over again. IAL not helping, tea baths for five days did nothing, salt baths and fridging for three days made his anxiety worse and after I left him out last night a whole new group started. Currently tubbed dechlorinated tap water half ro, water change twice daily with proper holtfreters solution for a gallon of water and an IAL leaf to hide under, appetite currently sucks will only eat 1/4 of a nightcrawler if I'm lucky used to eat almost two, he is around 7 inches long not sure if his age got him in March. Ph of tubbed water is 7.4 using prime on water.
Update started him on furan 2 and methylene blue last night today he ate nothing.. thinking it might be columnaris? Klanaplex has been ordered I was out... Flagyl ordered, prazipro ordered, and mercurchrome ordered just to have on hand in case needed.

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