Hospitalization of children with fever, diarrhoea and itching is on the rise in the district  due to heat wave that is sweeping different parts of the country. “At least 400 to 500 children took treatment every day at outdoor unit in the last seven days. Most of the children came with   cold, fever, diarrhoea, itching and other diseases caused by excessive hot weather,” said Dr Mrityunjay Saha Swapan of Dr Zahed Memorial Child Hospital, the lone pediatric hospital in the district. Also read: No respite from heatwave in next 24 hour During a visit to the hospital on Saturday, the UNB correspondent found parents from suburb and sadar upazila were crowding the specialised hospital with their sick children.