Thrush is a disease caused by Candida albicans infection of the oral mucosa, which is more common in infants and young children, especially those with weakened immune systems or those who are taking steroids or immunosuppressants. If the baby develops thrush during the newborn period, they should be seen at the neonatology clinic. If the thrush occurs after one month of age, older infants can be seen at the pediatric clinic during normal working hours. During non-working hours, such as noon, evening, weekends, or holidays, pediatric emergency services are available. If convenient, a pediatric dentistry clinic can also be visited.