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My child sucks their thumb - how can I prevent infection?

To prevent infection from thumb sucking, it is important to try to limit the cause of the cracking, which is sucking the thumb or other fingers. Clean the crack with water and a mild, unscented soap. Applying a moisturizing cream can help heal the crack. Avoid using antibiotic ointments unless the wound is infected. If the wound becomes seriously infected or shows general signs of infection like fever, it is best to consult a doctor for further treatment.