What should be done for a child's cough, food accumulation, and mouth ulcers?

When children experience coughing, indigestion, and mouth ulcers, the following measures are recommended: 1. **For coughing**: Identify the underlying cause of the cough, such as bronchitis or upper respiratory tract infection, and avoid using cough medications arbitrarily. Select appropriate treatments based on the cause, such as oral medications and using a humidifier to maintain proper moisture levels in the room. 2. **For indigestion**: Promote gastrointestinal motility through pediatric massage and abdominal massage to improve digestion. Adjust the diet to include easily digestible and nutritionally balanced foods such as congee and noodles, and consider taking probiotic supplements in appropriate amounts. 3. **For mouth ulcers**: Maintain good oral hygiene by brushing teeth in the morning and evening, and rinsing the mouth after meals. Avoid consuming irritating foods. Use medications such as Xinuojian (recombinant human epidermal growth factor) solution or watermelon frost as directed by a physician to promote ulcer healing. If symptoms persist or worsen, prompt medical attention is advised.