Hello dear patient. Welcome to HCM. I am Dr Jigar(ID specialist). I definitely understand your problem as it is tough to deal with a chronic disease like sle. As SLE patients already have disturbed immune system, addition of therapeutic agents like corticosteroid, which you are also taking, acts as double edged sword. They suppress immune system and as a side effect you are at higher risk of getting infection and difficult to treat. My advice is before going for surgical approach go for culture and sensitivity report of pus from infected area and take antibiotic according to report. Also take expert advice whether he can taper the dose of steroids during these period which may help in clearing infection. If this doesn t help then you can proceed for surgical treatment. I hope this will be helpful for you..Please give feedback for this and feel free if you need help in future management. Regards Dr Jigar.