Sebaceous heterotopia is a proliferative lesion that occurs on the lips, oral mucosa and external genitalia due to physiological variation of sebaceous glands. It manifests as pinhead-sized, isolated, yellow-white pimples that are higher than the skin surface, scattered or clustered, and generally have no subjective symptoms.

You need to go to the dermatology department of the hospital to confirm the diagnosis of the disease. If this disease occurs, carbon dioxide laser treatment is more appropriate.