I am living in Yuen Long and my baby boy is 4-1/2 mths old now. 2 nights ago, he got excessive mosqitoe bites all over his face & hands (other parts of body are well covered) which are now red and slightly swollen, but no fever. The marks are getting smaller & lighter now, but still apparant. Should I leave the bites alone as I am afraid that any creams may cause sensitivity to his skin. Any advice?