What's wrong with a 5-year-old child always having frequent urination and urgency?

Patient's question:

Age
Detailed medical condition and consultation purpose: Currently taking Hengyun, but it hasn't shown any effect after two days. I'm wondering whether to check again or continue taking it. The urine test two days ago indicated some inflammation.
Duration of the current illness: Two weeks
Current general condition: No improvement
Previous diagnoses, treatments, and their effectiveness:
Medical history: Previously had

Doctor's answer:

Hello, the phenomenon of frequent urination you mentioned in children may be caused by inflammation in the child's urethra. This is a relatively common disease in childhood.
If the child experiences frequent urination, it is recommended that you take them to the pediatric department of a hospital for a urinalysis. This is a good approach. If the test shows that the frequent urination is due to urethritis, it is advisable to treat the child with pediatric Amoxicillin granules for several days, as this can be quite effective. In this way, the child's symptoms of frequent urination will gradually improve. Wishing the child a speedy recovery.