What should be done for a four-year-old child with mouth ulcers?

When a four-year-old child develops oral ulcers, parents can take the following measures for management: 1. General care: Parents should ensure the child rinses his or her mouth promptly after eating to avoid irritation of the ulcer by food residue. In addition, spicy or irritating foods such as chili peppers and mustard should be avoided, as should chewing gum or other items that may irritate the ulcer. 2. Topical medication: For pain caused by oral ulcers, parents may apply topical medications such as watermelon frost or oral ulcer powder on the affected area under a doctor's guidance to promote healing. Moreover, compound chlorhexidine gluconate mouthwash can also be used for anti-inflammatory purposes. 3. Oral medication: If the oral ulcer is severe or accompanied by secondary infection, parents may administer antibiotics such as amoxicillin granules or cefaclor granules according to medical advice. If the ulcers are due to vitamin deficiency, supplementary use of multivitamin tablets or children's chewable vitamin tablets may be considered. If there are any concerns, please consult a physician.