A sebaceous cyst is a benign, closed sac located just beneath the skin’s surface that forms when oil-producing glands or hair follicles become blocked, leading to the accumulation of sebum or keratin. Although often used interchangeably with epidermoid cysts, these growths are particularly common in the scrotal area due to its high density of sebaceous glands and follicles, appearing as round, movable lumps that can range from a few millimetres to several centimetres in size. These cysts are frequently identified in adult men of all ages and may present as either single or multiple growths that remain stable for years or gradually enlarge over time.
- Small, round bump beneath the scrotal skin
- Flesh-coloured or slightly yellowish appearance
- Smooth, moveable lump that rolls under the fingers
- Painless to touch
- Visible central punctum (dark dot) in some cases
- No interference with daily activities
Sebaceous cysts may remain in this mild stage for years without causing problems. Many men discover them incidentally during self-examination or bathing.




