This is the most common form of miliaria. It occurs when there is plugging of the eccrine ducts within the malpighian layer and release of sweat into the adjacent skin. Miliaria rubra is characterized by discrete erythematous papules and papulovesicles. The forehead, upper trunk, and intertriginous areas are commonly affected. Unlike miliaria crystallina, miliaria rubra is characterized by spasmodic pricking sensations. A decrease in environmental heat and humidity is the only treatment required.