Why does my baby boy feel pain when peeing?

Question 1 I would like to ask why a two-and-a-half-year-old boy\’s genitals hurt when he urinates? What tests are needed? What usually causes this? Usually, the clothes of adults and children are washed separately, and the basins used are also separate. Now that I am older, only the washing basin is not separated. Does this have something to do with it? Dr. Luo Zhen’s answer: When this happens, firstly, check whether you are wearing crotchless pants, and secondly, check whether the foreskin is long. It is the easiest place to hide dirt and evil people and people. It is best to wash it with clean water after each defecation. Now gently turn the foreskin to see if there is any redness; also check the baby\’s urine to see if there is inflammation. If there is any, take good care of it first and apply topical erythromycin ointment. Question 2: My baby is over six months old and has a fever of 38.5℃. Can I use diclofenac sodium suppository? Doctor Yang Yafeng answered: Diclofenac sodium suppository can be used in children, but it is recommended to use it with caution. Currently, the most widely used drugs for reducing fever in infants and young children are acetaminophen (applicable for those over 3 months old) and ibuprofen (applicable for those over 6 months old). In addition, you can physically cool down your child by wiping the neck and armpits with a warm towel, which is also effective. Question 3: My child is two and a half years old. He has some itchy bumps on his stomach and neck. If he scratches them, they will become infected. The bumps get bigger and bigger when he is scratched. They look like they are swollen. I applied ointment and waited for an hour before they went away. Sometimes I have inexplicable relapses. What is happening? Is there any way to cure it? Dr. Cui Lixia answered: This is urticaria caused by allergies, and cetirizine can be taken orally. Pay attention to when your child gets a rash and avoid it. A complete solution requires checking for allergens and avoiding contact with them.