<prompt> Crystalline miliaria is due to obstruction toSweat glandSebaceous glandsAccessory sweat glandHair roots  <response>: Miliaria crystallina is caused by obstruction of the sweat ducts close to the surface of the skin Miliaria rubra, caused by obstruction of the sweat ducts deeper in the epidermis; Miliaria profunda, the result of sweat leaking into the middle layer of skin dermis. Ref Harrison20th edition pg 1207 