My son's ear behind the lining is red and bleed,it seem to be very itchy as this few night he keep scratching, what cream can I apply to ease his itchiness ?

You can consider getting moisturizers from Aveeno baby (http://sg.iherb.com/Aveeno) or California Baby (www.pupsikstudio.com/shop-by-brands/california-baby/). These brands are very popular and less harsh on baby's skin. One of my friends also tried Physiogel Calming Relief (http://www.guardian.com.sg/physiogel-calming-relief-ai-body-lotion-100ml/p/175664). Best to apply the moisturizer within 10mins after bath to help lock in the moisture. Well moisturized skin is less prone to itching. Hope this helps!