Xanthelasma is a skin condition characterized by yellowish, cholesterol-rich deposits that appear on or around the eyelids. These flat, soft, and slightly raised patches are typically harmless but may be a sign of underlying lipid metabolism issues, such as high cholesterol or triglycerides. Xanthelasma can occur in individuals of any age but is more common in middle-aged or older adults and people with conditions like hyperlipidemia or diabetes.