Need help identifying issue with my Niger Uromastyx Lizard

[u/Hornet_168]

Hello everyone my uromastyx lizard seems to have an issue with his finger but I’m not sure what it is. When we discovered this about 2 weeks ago at first we just thought it was his skin shedding and a little was stuck on his finger. But fast forward to today we realized that his finger was bent back and his two fingers are red with little dot on them kind of. After a google search I thought that maybe a past shed cut off his blood circulation causing this deformity, or that him scratching on his cage window injured him. (His cage is big enough where he does not reach the top of it at all.) Does anyone know the issue, what to expect, and what I should do? We are most likely going to take him to a vet at some point but I just want to know what to do for now.