Table 1. Novel classification of rosacea on the basis of diagnostic, major, and secondary features of rosacea.

Diagnostic features	Major features	Secondary features
Persistent centro-facial erythema associated with aggravation by trigger factors	Flushing/transient erythema	Burning sensation
Phymatous changes	Inflammatory papules and pustules	Stinging sensation
	Telangiectasia	Edema
	Ocular manifestations Lid margin telangiectasia Blepharitis, keratitis, conjunctivitis, and sclerokeratitis	Dry sensation of the skin

Adapted from Gallo et al. ² and Tan et al. ¹⁷