These are generally viral rashes.
It could be hand foot and mouth disease if the lesions have appeared on the palate
Do not worry these are self limiting.
Kindly deworm your children at the earliest.
Apply a calamine
lotion to the areas for 5 days.
Thank you for your query.Hope this answers your query.If you have any other queries kindly direct them to me.Wishing your children a speedy recovery.Have a nice day.