Inflammation of the sebaceous (oil) glands is known as acne. Sebaceous glands are connected to hair follicles in the skin. At first, there is excessive sebum production due to the action of androgen, which is a hormone produced in both females and males.
Due to some circumstances, cells may accumulate abnormal amounts of various substances. Those accumulations can be harmless or it can cause varying degrees of injuries. When an excessive amount of hemoglobin is stored as hemosiderin inside the cells, Hemosiderin staining occurs. It is one branch of Intracellular accumulations. So, in order to understand Hemosiderin staining, we need to look at the Intracellular accumulations.