Hello. Thank you for writing to us at healthcaremagic
Acne can affect face, as well as arms, chest, back and shoulders. All these areas are rich in sebaceous glands.
You seem to have moderate to severe grade of acne and an extensive involvement, therefore topical treatment alone would not be effective.
If I was the treating doctor I would have started you on Oral
Retinoids e.g
Isotretinoin. Isotretinoin is sebostatic, comedolytic and antinflammatory. Therefore, it has a multipronged action in treatment of acne.
Besides Oral retinoids, topical treatment with topical
benzoyl peroxide cream or wash is to be continued as before.
Oral retinoids are prescription drugs and I suggest you to visit a
dermatologist for a prescription of the same.
You dermatologist might also start you on
oral antibiotics if your acne is inflammatory i.e red, painful and pustular.
Regards