PSTPIP1 and acne: We also diagnosed two patients of PSTPIP1-associated inflammatory diseases (PAID), a dominantly inherited disease that can be subtyped into pyogenic arthritis, pyoderma gangrenosum, and acne (PAPA) syndrome, PSTPIP1-associated myeloid-related proteinemia inflammatory (PAMI) syndrome, and other PAPA-like syndromes (22).