If you have what feels like razor bumps or acne on the back of your neck or scalp, you may have acne keloidalis nuchae. Find out what can help. A dermatologist is a medical doctor who specializes in ...

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Contributed by Stephen J. Benkovic; received December 17, 2025; accepted February 4, 2026; reviewed by Daniel Ahmed, Wei Gao, and Xuanhe Zhao Targeted intracellular delivery of large therapeutic ...