self-treatment maybe, but a dermatologist could diagnose him and prescribe the proper medicine. it does look like pretty advanced acne.
Listen, trust me on this, the only thing that works on acne is f**king ACCUTANE --i know, I've taken it and everything else and it cured me. Also, you have to eat PALEO (cut out ALL sugar, all processed carbs, all wheat, gluten etc.) Just eat meat (fish, eggs, steak, bacon, bison, antelope, octopus, reindeer, muskrat, shrimps, lobster, human) and vegetables (anything green and colored), no starches. Drink only water and green tea. Since I went paleo my skin and hair have become glorious, shiny and lustrous.