Does anyone know if you are allowed to leave Italy

Does anyone know if you are allowed to leave Italy while under quarantine? I'm asking because I'm from the UK and hoping to visit my house in Tuscany soon to check up on it, as I haven't been for almost 18 months. Currently the rules are that visitors from the UK must quarantine for 5 days. However, if I were to visit Italy for a shorter period, i.e. quarantine at the house for a period shorter than 5 days and then go straight back to the airport to fly back to the UK, is this allowed under the Italian rules? I can't find the answer anywhere, but I know that in the UK, for example, you are able to leave the country while under quarantine. Thanks.