Thanks for writing in.
Acne is caused by hormonal imbalance.
Blockage of sebaceous glands causes papules and pustule and cystic acne
Acne is treatable now.With correct treatment all your pimples ,
scars and dark spots can be treated.
To start with you have to apply Brevoxyl cream twice daily .
Also you can use anti acne face wash like Brevoxyl face wash.
For swelling you can take tab ibuprofen.Also you can apply neosporin
ointment over the area.
Discuss the option of Isotretinoin
with your dermatologist
.It will have rapid effect.
Hope this helps.