Thank you for your query.
I think there is no reason for added worry. most probably the child is suffering from some viral exanthematous rash
.That is why your baby was so irritable. I think you child should improve with the spread of the rash.Apply a calamine
moisteriser locally and give a mild antiallegic drop. This should take care of the problem till you consult your child specialist.I hope this relaxes you a bit.Wishing your baby a speedy recovery.Thank you,have a nice day