The prognosis of Impetigo is rated as excellent. If the treatment course is duly followed, the infection clears completely. Normally, the treatment course for the disorder lasts for 2-3 weeks. Additionally, the presence of scars is not common after the infection clears.
Many medical experts also opine that if the prescribed antibiotics fail to work, it could be because of an improper diagnosis in determining the type of bacteria causing the infection. However, in some cases, Impetigo can lead to certain complications like Glomerulonephritis, which is characterized by inflamed kidneys, after the infection has healed. The medical experts are of the opinion that treating Impetigo may not prove to be effective in warding off such medical complications. The Streptococcus bacterial strains are responsible for such incidences.