“…Of note, the photograph illustrating ' 'Persistent erythema (PE) with normal Demodex density (Dd)' ' is the same as that of subclinical demodicosis ' 'PE with high Dd' ' to stress that the clinical appearance/phenotypes of these conditions are identical. The patient with pityriasis folliculorum on black skin has provided written consent for publication Table 1 Comparison between pityriasis folliculorum and erythematotelangiectatic rosacea (ETR), and between rosacea-like demodicosis and typical papulopustular rosacea (PPR) Pityriasis folliculorum ETR according to NRS definition References Definition Etiological Clinical [6,101,102,105] Cause Demodex proliferation Inflammatory reaction? [6,101,102,105] Demodex density Similar [29,109,156] Histology Similar [31] Signs and symptoms Similar, mixed forms are the most frequent [6,97], Fig.…”