Moderate fever with diarrhea can be a symptom of teething in children. Other signs of teething may include mood changes, increased saliva, disrupted sleep, nasal congestion, decreased appetite, and a tendency to put things in the mouth. Some measures that can help with teething discomfort include gently massaging the gums with a cold damp cloth or rubbing them with the back of a cold spoon. If your child's condition does not improve or the fever persists, it may be best to consult a healthcare professional. It is recommended to seek medical attention if the child has a high fever, vomiting, severe diarrhea, difficulty eating or drinking, or neck stiffness.