Figure 2.

A diagram showing the relationship between severity (y-axis) of skin and tongue and duration (x-axis) in generalised pustular psoriasis during treatment. The solid line represents the change of skin condition, and the dashed line represents the change of geographic tongue. Measurement scale of skin utilised the Generalized Pustular Psoriasis Area and Severity Index (GPPASI), with a score of <10 indicating mild disease, a score of 5–10 indicating moderate disease, and a score of >15 indicating severe disease. Measurement scale of geographic tongue utilised a geographic tongue severity index developed by Picciani et al., with a score of <7 considered as mild, a score of 7–12 considered moderate, and a score of >12 considered severe. The unit of treatment duration is weeks