The contagious period for impetigo generally lasts until the sores have completely healed and crusted over. This usually takes around 7-10 days with proper treatment. It is important to have your symptoms seen to so that the proper treatment can be prescribed by the Pharmacy First Impetigo service at Touchwood Pharmacy Ramsgate. Before and during treatment you should maintain good hygiene and avoid close contact with others during this time to avoid further spread of an impetigo infection.