Hi..
Welcome to HEALTHCARE MAGIC.
I have gone through your query and can understand your concern..
As per your complain cystic acne occurs due to clogging of pores over the skin and there is also bacteria accumulation and infection oleading to pus filled bumps..
It can be treated with a combination of antibiotic and anti-acne medications..
In case if you have tried a number of creams with no effect you may need a oral intake of antibiotics and retinoids under supervision of a trained
dermatologist..
He can advise you
oral antibiotics like Doxycycline, Clindamycin etc..
Retinoids like Isotretinoin can be given..
Along with it topical application of
benzoyl peroxide gel, clindamycin gel and Adapelene gel can be advised..
Wash your face with
salicylic acid containing facewash..
Take multivitamin supplements..
Avoid oily food..
You can also go for treatments like
Microdermabrasion.
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.