This is a very good observation on your part and yes, these spots are known as petichiae.Your son has a very high fever so he must have an infection. The most common infection causing petichiae on the palate in children is a strep [streptococcal] infection usually as a result of tonsillitis.There are other,usually viral illnesses that can also give petichiae on the palate in young children such as glandular fever, roseola, german measles,herpes stomatitis and sometimes with hand foot and mouth disease.
It would be best to ask your paediatrician to see your young son.
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