<prompt> Difference in Acne rosacea Acne vulgarisPustuleErythemaPapuleAbsence of comedone  <response>: Erythema and papulo-pustule papules and pustules are seen both in Acne rosacea and Acne vulgaris Comedones are absent in Acne rosacea a characteristic feature of Acne vulgaris Ref Harrison 20th edtion pg 1213 