In the early stage of rosacea, patients may observe small patchy or diffuse erythema on the nose or face, accompanied by dilated capillaries and excessive sebum secretion, which is referred to as the erythema stage; subsequently, on the basis of erythema, red papules and pustules appear, which is referred to as the papule stage. As the condition progresses further, nodules of varying sizes and uneven hypertrophic hyperplasia form, which is referred to as the rhinophyma stage. The Rosacea Network provides information on rosacea and treatment options for everyone's reference.