Miliaria crystallina occurs when sweat is retained in the pores in the skin. This close-up photograph shows the tiny, clear blisters that rupture easily. There is no associated inflammation, so no redness is present under or around the blisters. This condition often occurs in newborn infants.
Review Date 12/10/2021
Updated by: Neil K. Kaneshiro, MD, MHA, Clinical Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.