Squeezing a sebaceous cyst.
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Description: Sebaceous cysts or Atheromas, form out of your sebaceous gland. Sebaceous glands produces oil called sebum, that coats your hair and skin. Cysts can develop if the gland or its duct- the passage from where oil is able to leave; becomes damaged or blocked. This usually occurs due to a trauma to the area. The trauma may be a scratch, a surgical wound, or a skin condition, such as acne. Sebaceous cysts grow slowly, the trauma might have occurred months or weeks before you notice the cyst. Small cysts are typically not painful. Large cysts can range from being uncomfortable to considerably painful. Large cysts on the face and neck may cause pressure and pain. This type of cysts are typically filled with white flakes of keratin, which is also a key element that makes up your skin and nails. Most cysts are soft to the touch. Areas on the body where cysts are usually found include: scalp, face, neck, back