My diabetic patient refuses to regulate his blood sugar and.......

My diabetic patient came with an abscess. he's refusing to regulate his blood sugar with insulin but he's suffering a severe pain because of that abscess I tried to refer him to someone else but he refused that. What should I do? how do I manage his case? how do I drain his abscess without causing any damage to his health?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums