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of 102 and more is considered high for a young child but if it is controlled with antipyretics like acetaminophen
then it's not necessarily an emergency.
If your child has or develops any of the following then urgent care might be preferred rather than waiting for routine appointment.
1.Persistent fever or worsening fever despite antipyretics .
2.Noisy breathing or wheezing
3.Flaring of nose or fast breathing (>60 breaths/min) or continuous cough
4.Decreased urination, lethargy
, refusal to feeds or irritability indicating worsening of general condition.
Also in case of asthmatics its always better to prevent an attack by timely treatment .
Hope I have answered your doubt.
Wishing him a speedy recovery.