miliaria /mil′ē·er″ē·ə/ [L, milium, millet] , minute vesicles and papules, often with surrounding erythema, caused by occlusion of sweat ducts during times of exposure to heat and high humidity. Backup pressure may cause sweat to escape into adjacent tissue, producing itching and prickling. Prevention and treatment include cool environment, ventilation, colloidal baths, and dusting powders. Also called prickly heat. See also heat rash.
