#Milium.# (_Synonyms:_ Grutum; Strophulus Albidus.) #What is milium?# Milium consists in the formation of small, whitish or yellowish, rounded, pearly, non-inflammatory elevations situated in the upper part of the corium. #Describe the clinical appearances.# The lesions are usually pin-head in size, whitish or yellowish, seemingly more or less translucent, rounded or acuminated, without aperture or duct, are superficially seated in the skin, and project slightly above the surface. They appear about the face, especially about the eyelids; they may occur also, although rarely, upon other parts. But one or several may be present, or they may exist in numbers. #What is the course of milium?# The lesions develop slowly, and may then remain stationary for years. Their presence gives rise to no disturbance, and, unless they are large in size or exist in numbers, causes but slight disfigurement. [Illustration: Fig. 10. Milium Needle.] In rare instances they may undergo calcareous metamorphosis, constituting the so-called _cutaneous calculi_. #What is the anatomical seat of milium?# The sebaceous gland (probably one or several of the superficially-situated acini), the duct of which is in some manner obliterated, the sebaceous matter collects, becomes inspissated and calcareous, forming the pin-head lesion. The epidermis is the external covering. #What is the treatment?# The usual plan is to prick or incise each lesion and press out the contents. In some milia it may be necessary also, in order to prevent a return, to touch the base of the excavation with tincture of iodine or with silver nitrate. Electrolysis is also effectual. In those cases where the lesions are numerous the production of exfoliation of the epiderm by means of resorcin applications (see acne) is a good plan. #Steatoma.# (_Synonyms:_ Sebaceous Cyst; Sebaceous Tumor; Wen.) #Describe steatoma.# Steatoma, or sebaceous cyst, appears as a variously-sized, elevated, rounded or semi-globular, soft or firm tumor, freely movable and painless, and having its seat in the corium or subcutaneous tissue. The overlying skin is normal in color, or it may be whitish or pale from distention; in some a gland-duct orifice may be seen, but, as a rule, this is absent. #What are the favorite regions for the development of steatoma?# The scalp, face and back. One or several may be present. #What is the course of sebaceous cysts?# Their growth is slow, and, after attaining a variable size, may remain stationary. They may exist indefinitely without causing any inconvenience beyond the disfigurement. Exceptionally, in enormously distended growths, suppuration and ulceration result. #What is the pathology?#