Thank you for your query,
As your child is having fever since 5 days the ,evaluation with complete history, physical examination and basic investigations like complete blood picture, malarial parasite, widal test
and complete urine examination to carried out to detect the cause of fever and for its proper management.
for fever as prescribes, give plenty of oral fluids and soft diet
In children the trunk will be relatively warmer than the limbs during febrile conditions, but thermometer should be used to measure the temperature.
Consult your Pediatrician
Hope i have answered your query.