<prompt> Answer this question truthfullyWhat information do we have about sebaceous cysts?  <response>: <reason> Sebaceous cysts are not dangerous and can usually be ignored. Placing a warm moist cloth compress over the area may help the cyst drain and heal.If you have a small inflamed cyst, your doctor may inject it with a steroid medicine that reduces swelling. If the cyst becomes swollen, tender, or large, your doctor may drain it or perform surgery to remove it. 