This past week, after months of no problems, Henrietta started getting injection site complications. A scab forms and then the licking begins, the area gets huge and weepy. Her regular vet is out of town so she saw a relief vet who had no clue why this was happening and suggested I just keep the areas clean. There are seven sites like this now. Insulin is PZI from chewy.com. I don't think it's the insulin because I used this bottle for weeks before this started. I get syringes from ADW, BD brand made in the USA. I don't think it's the syringes. I have NO idea why this is happening. Does anyone have experience with a similar issue?