What could be the cause? When should I start consulting?

Thank you for your help!

Question

Hello, I have an 18 month old girl. She has a fever since yesterday PM. Tonight she is 39. I give her tylenol to control the fever. She has completely refused to eat her supper. Wants to be in our arms only, refuses to play, constantly shits 🥴 She slept well though her night and naps though! What questions me is that she has no other symptoms! No runny nose or cough, doesn't pull her ears.

Naji-tom Samaha · Accepted Answer

Hello Mrs, There are many possible causes and unfortunately it is impossible to determine which one without a medical evaluation. It is common for a child with a fever to refuse to eat or to eat less, but should still drink or eat a little. Continue to monitor the situation and administer Tylenol as needed. Encourage your child to drink plenty of fluids, even if it means giving smaller amounts at a time. If the fever persists for 72 hours or if your child is not eating at all, a doctor should be consulted. I will remain available if you have any further questions! Sincerely, Tom Samaha, pharmacist

What could be the cause? When should I start consulting? Thank you for your help!