Sebaceous Cyst

This is what i am having behind my neck. Doctor said can let it as it is. If i am still worried, i can go for an operation to remove it. Guess i will leave it at the moment.

Sebaceous Cyst
Sebaceous cysts are small lumps or bumps just under the skin. To be more specific, they are closed sacs that contain keratin -- a "pasty" or "cheesy" looking protein that often has a foul odor.

Although they are usually found on the face, neck, and trunk, they also occur in the vaginal area or other parts of the genitalia. In cases of the latter, it is not uncommon for women to fear that they are the result of genital herpes. But genital herpes create a blister-type sore that eventually becomes crusty, not just a bump or lump under the skin.

What Causes Sebaceous Cysts?
Sebaceous cysts are often the result of swollen hair follicles or skin trauma.
Symptoms and Signs/Symptoms of Infection
Sebaceous cysts are usually painless, slow-growing, small bumps or lumps that move freely under the skin. It's important not to touch or try to remove the substance inside to prevent tenderness, swelling, and infection of a sebaceous cyst.
Occasionally, infections may occur. Signs or symptoms that may indicate infection of sebaceous cysts include:

- redness
- tenderness
- increased temperature of the skin over the bumps or lumps
- greyish white, cheesy, foul-smelling material draining from the bump or lump

Treatments for Sebaceous Cysts
Sebaceous cysts most often disappear on their own and are not dangerous. As stated, however, they may become inflamed and tender. Sometimes sebaceous cysts grow large enough that they may interfere with your everyday life. When this happens, surgical removal may be necessary, and this procedure can be done at your doctor's office. Small inflamed cysts can often be treated with an injection of steroid medications or with antibiotics.