Need help!!! Baby skin help!

Nish

So my son has been having “baby acne”when he turned 3 weeks. It has gotten worst & there is no way that this is baby acne and they keeping saying oh yea it is it’ll go away on its own. No !!! Someone else child had this or now what it may be? I did schedule an appointment tomorrow but if they say baby acne agin I’m going to scream!!!