Cysts may be related to high levels of testosterone, hence may be more frequent in users of anabolic steroids. A case has been reported of a<unk>  being caused by the human botfly. Hereditary causes of<unk> s include Gardner's syndrome and basal cell nevus syndrome.
Sebaceous cyst
Abscess
Tornwaldt cyst
Bartholin's cyst
Dentigerous cyst
Epidermoid cyst
Trichofolliculoma
Papillary hidradenoma