This is truncal acne (back acne) with post-inflammatory hyperpigmentation. The small, uniform bumps on arms can also be folliculitis or keratosis pilaris. This pattern is very common and usually linked to sweat, oil, friction, and clogged pores.
Helpful tips/ words of caution:
• Shower after sweating (gym/travel)
• Avoid tight clothes, backpacks rubbing on back
• Don’t scrub aggressively → worsens marks
• Use non-oily products (avoid heavy oils on back)
• Change bedsheets & clothes regularly
Kindly consult with me via Practo for detailed evaluation and treatment
Answered2026-04-01 10:58:18
1/1 people found this helpful