Sebaceous Cyst- Part 1

A cyst is a closed pocket of tissue that can be filled with fluid, air, pus, or other material. Cysts can form in any tissue in the body and the majority are noncancerous (benign). Depending on type and location, they are drained or surgically removed. Unlike epidermoid cysts, which originate from the skin, and unlike pilar cysts, which come from hair follicles, true sebaceous cysts are rare and originate from your sebaceous glands.

Sebaceous cysts can be found on your entire body (except the palms of your hands and the soles of your feet). Very few can become malignant (cancerous).

Epidermal inclusion cysts are sometimes mixed up with sebaceous cysts. Note that epidermal inclusion cysts do not involve the sebaceous gland.

Causes include:

 

The most common cause of cysts is blockage of a duct, which can be caused by trauma, infection, or even an inherited tendency. Different types of cysts form in different places on the body. Some cysts form internally such as in the breast, ovaries, and kidneys, while others form externally and are visible.

 

There is a rare possibility that a sebaceous cyst can become cancerous, but they are generally harmless. These characteristics may indicate that a sebaceous cyst is cancerous:

 

• Small lumps under the skin. The lumps are rarely painful. 

• Some cysts, however, may become inflamed and sore when touched. 

• Inflamed cysts may have red skin and/or warmth.

• Growth, when removed, is rapid.

• Over five centimeters in diameter.

 

Symptoms of a sebaceous cyst

Small cysts are typically not painful. Large cysts can range from uncomfortable to considerably painful. Large cysts on the face and neck may cause pressure and pain. This type of cyst is 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

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