3 years old children long-term constipation, anal fissure. How to do

3 years old children long-term constipation, anal fissure, first of all should be diet conditioning, eat more food rich in dietary fiber. If the symptoms of anal fissure is mild, you can use erythromycin ointment and other drugs for external application. If anal fissure is serious, should be sent to the hospital for surgery as soon as possible.