Italy has one recognized desert-like area: the Accona Desert (Deserto di Accona) in Tuscany, near Asciano. It is a semi-arid region characterized by biancane—white, eroded clay formations—and unique flora/fauna, including the Hermann's tortoise. It is a protected area of regional interest.
Correction: The Bungle Bungle Range (Purnululu) and Simpson Desert are located in Australia, not Italy. They are famous Australian deserts, not Italian.
Italy's climate is predominantly Mediterranean, alpine, or humid subtropical. True deserts are absent; the Accona is a "pseudo-desert" created by specific geology (clay soils, erosion) and microclimate, not by arid climate.