Histopathology is the basis of diagnosis. Stratified-squamous epithelium with a granular layer that surrounding a cystic space filled with laminated keratin and a variable number of<unk> <unk>  cysts is seen to be present. It can be difficult to distinguish from other skin conditions, including molluscum contagiosum and acne vulgaris but can be corroborated with histopathology. Associations It can be associated with Steatocystoma multiplex.
Eruptive vellus hair cyst
Tuber cinereum hamartoma
Trichofolliculoma
Adenoma sebaceum
Papillary hidradenoma
Cutaneous columnar cyst
Nevus of Ota
Syringocystadenoma papilliferum