“…The pathogenesis of PG is not fully understood; however, it is commonly associated with underlying systemic conditions. Authors often mention its co-occurrence with inflammatory bowel disease (ulcerous colitis and Crohn’s disease), rheumatological (polyarthritis), and haematological disorders (leukaemias, myelodysplastic syndromes) ( 2 , 9 , 10 ). Moreover, Al Ghazal et al ( 11 ), in their paper indicated a necessity to look for additional, possible, unreported predisposing comorbidities, such as anaemia, obesity or diabetes.…”