sebaceous gland atrophy atrophic sebaceous gland MP:0001228 MP:0000649 acquired diminution of the size of the holocrine glands of the dermis that secrete sebum into the hair follicles, associated with wasting as from death and reabsorption of cells, diminished cellular proliferation, decreased cellular volume, pressure, ischemia, malnutrition, reduced function or malfunction, or hormonal changes MPheno.ontology small sebaceous gland sebaceous gland atrophy