If your face is not smooth, rough and has small bumps, it may be sebaceous hyperplasia, or it may be eczematous cysts or acne, all three of which have no conscious symptoms. Sebaceous hyperplasia tends to occur in people with greasier skin, eczematous cysts tend to occur in children and young adults, and acne tends to occur around puberty. The etiology and pathogenesis of sebaceous hyperplasia are not completely clear, but may be related to trauma and local chronic inflammatory stimulation. If you want to get rid of it, you can choose electro-ionic cautery or liquid nitrogen freezing treatment. Rash cysts also do not require treatment and can fade on their own. Acne is a common disease and can be treated with topical medications.