A sebaceous cyst is a benign, slow-growing lump that develops under the skin due to the blockage of sebaceous glands. These cysts are typically filled with a mixture of keratin, sebum, and other skin debris, commonly appearing on areas such as the face, neck, scalp, and upper body. While they are generally painless and harmless, sebaceous cysts can become inflamed, irritated, or infected, leading to discomfort and potential complications. In such cases, medical intervention may be necessary to prevent further issues. Treatment options range from simple drainage and corticosteroid injections to surgical removal, which helps reduce the risk of recurrence. Though often not a serious health concern, seeking professional evaluation ensures appropriate management and prevents potential infections or cosmetic concerns associated with larger cysts.