My Acne began at 19..I believe a demodex mite infestation coupled with a severely poisoned body(drugs, pharm drugs, alcohol, stress, hard life, flouride poisoning) and a weakened immune system, on top of getting my hormones messed up from the BC pill set the whole thing off.
Im your sons age now and still fighting this battle. Im just begining to figure out whats going on here..still along way to go.
I think reading up about Liver Flushing is a good way to start. Even with topical treatments like anti-mite cream (what Im doing) or anti biotics, a good working, clean liver is essential to supporting the health of the body. So liver/bowl/ parasite cleansing, and lots of it. Good diet too.