By Gary M. White, MD
In all forms of miliaria, obstruction of the sweat gland during periods of excessive sweating lead to clinical lesions. In the case of miliaria crystallina, the obstruction is very superficial and the vesicles subcorneal. A patient with profuse sweating during a febrile episode is typical. It may occur after a severe sunburn or in neonates.
Tiny, 1-2 mm, clear vesicles on otherwise normal skin is characteristic. They appear in crops, usually on the trunk.
No treatment is needed. The lesions rupture easily and after mild desquamation, the skin returns to normal. Obviously, preventing future episodes of profuse sweating would prevent recurrence.
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