OK, well, my son's normal newborn irritated cheeks just never went away, and indeed got a lot worse when he was about 8 months. We took him to a consultant dermatologist when he was about 13 months and they'd turned into huge cysts that needed draining every day, who said that there were two options:
- Do nothing and they would eventually resolve, possibly with a little scarring, or
- Treat them proactively and almost certainly leave scarring.
We chose 1). They went by the time he was about 2.5 (the major inconvenience apart from having to squeeze them was fielding questions from random people), and he was left with minimal scarring which now, at the age of nearly 16, is barely visible.
The dermatologist said at the time that he would no more likely than any other boy to get teenage acne badly, and frankly his acne is not that bad- it's more related to blackheads than that angry kind that you sometimes see on teens. He's just a little pimply over his T zone.
I think his infantile acne was very bad, and I've never seen another baby with it quite as badly (I'll try to scan a photo of him as a baby or toddler to put on my profile for you), so I would be surprised if your little one went as far as the cyst stage, but I just wanted to come and say don't worry, it may well not be as bad as it seems. Also there may be different treatments available now.