Miliaria, or eccrine miliaria, is a frequently seen skin disease triggered by blocked eccrine sweat glands and ducts, causing backflow of eccrine sweat into the dermis or epidermis.
This backflow results in a rash comprising sweat-filled vesicle formation under the skin. Other names for this skin condition include “heat rash,” “prickly heat,” or a “sweat rash.” It is most common in warm, humid climates during the summer months. The 3 main types of miliaria are crystallina, rubra, and profunda and are classified by the depth of obstruction of the sweat duct causing clinical and histological differences. The rash is usually self-limited and resolves independently of treatment.
