Table 1.

Classification criteria

Atypical Post-Adolescent Acne (APAA)	Mild-Moderate APAA (mAPAA) (Fig. 1)	Severe APAA (sAPAA, Smoker’s acne) (Figs. 2 and 3)
Papules-pustules and nodules (predominantly inflammatory lesions).	Large closed comedonals, small cyst-like comedonals, open with large dimension inflammatory lesions scarce or absent.	Like the moderate form, but the presence of cysts of the dimension > 3mm.
Mainly located on the jaws, on the mandibule and the neck.	Localized on the face, but affecting more the malar region and the forehead, with concentrations on small areas of the face.	Localized on the face but affecting the malar region and the forehead, spread over the whole face sometimes confluent.
Normal skin.	Possible normal skin/possible enlarged pore diameter and icepick scars.	Pallid skin, thick of greyish color, enlarged pore diameter, icepick scars.