(1) Flushing
(2) Persistent Erythema
(3) Telangiectasia
(4) Papulopustular (Papules/pustules Lesion Counts)
(5) Phymatous
(6) Ocular Manifestations

The RRDi endorsed the phenotype classification of rosacea in November 2016.  Galderma acknowledged the phenotype classification about a year later. In November 2017 the NRS has now moved forward with classifying rosacea into phenotypes with its own published paper. [1]

For over fourteen years, rosacea was classified as subtypes, which has been controversial from the beginning. A new direction has emerged in the diagnosis and classification of rosacea which is superior to the subtype classification because the phenotype uses a "a symptom-oriented therapy approach."  For more information read the article by the ROSCO panel: 

ROSCO Panel Recommends New Approach on Rosacea Diagnosis by Phenotype

Phenotype Questions

Why is the phenotype classification superior to the subtype classification?  Answer. 

What distinguishes the phenotype classification from the subtype classification? Answer.

Applying the Phenotype Approach for Rosacea to Practice and Research

In the British Journal of Dermatology, May 25, 2018, it states, “Rosacea diagnosis and classification have evolved since the 2002 National Rosacea Society (NRS) expert panel subtype approach. Several working groups are now aligned to a more patient-centric phenotype approach, based on an individual's presenting signs and symptoms. However, subtyping is still commonplace across the field and an integrated approach is required to ensure widespread progression to the phenotype approach.“  The article concludes:

”These practical recommendations are intended to indicate the next steps in the progression from subtyping to a phenotyping approach in rosacea, with the goals of improving our understanding of the disease, facilitating treatment developments, and ultimately improving care for patients with rosacea.” [2]

End Notes
[1] Standard classification and pathophysiology of rosacea: The 2017 update by the National Rosacea Society Expert Committee

[2] Applying the phenotype approach for rosacea to practice and research.
Br J Dermatol. 2018 May 25;
Tan J, Berg M, Gallo RL, Del Rosso JQ