Hi there ~
I understand your concerns. The localized rash
round the injection site indicates inflammation and possibly infection. You might need to consult a doctor to get the right medications. However using over the counter antibiotics may be helpful till you see a doctor. It might be good to know that sometimes using needles that are already used by others or what are called dirty syringes, is a risk factor for sexually transmitted diseases. It may also be go off of opiate
addict with the help of a substance abuse
I hope this helps. Take care and have a lovely day!