What home treatment can we do for 10 month old baby with a high fever?

Ibuprofen cautiously: >100 different infections could be causing the fever so there is no way to answer your question, but... Most of the infections are common colds etc. Give Ibuprofen - dose depends on child's weight. Fever itself is not harmful rather the underlying cause. 2% can have seizures. See md if acting very sick, if breathing hard/funny, crying excessively, dehydrated, excessively sleepy, stiff neck etc.