Skin & acne
Why do i have acne on my back?
The back has a very high density of oil glands and many hair follicles, so it clogs easily. Body acne responds to the same things as facial acne — some improvement takes weeks, and most treatments need several months before you can judge them.
What this does and does not tell you
This is general information, not a diagnosis. Only a clinician can examine you, take your history and run tests. The same symptom has different causes in different people.
If something is sudden, severe, or getting worse quickly, get medical advice rather than reading on.