A cervical dermoid cyst is a type of cyst that forms in the neck area. It is a benign (non-cancerous) growth that is made up of a combination of skin tissues, such as hair, sweat glands, and sebaceous glands. It is usually found in the midline of the neck, just below the Adam's apple. Cervical dermoid cysts are usually small and painless, but they can grow larger and cause discomfort. Treatment usually involves surgical removal of the cyst.