Thank you for your query. would you please clarify a few things for me? 1) did he have any fever or flu like symptoms prior to getting these spots? 2) does he seem out of sorts ( cranky or not feeding well)? 3) was there a possibility that he was exposed enough for insect bites or was he at home the whole time? 4) Was the fluid in the blisters white like pus or clear/transparent? 5) did you travel anywhere recently with him or were you near someone who recently had or currently has chicken pox? 6) do you see and bite marks where the red dots first started? 7) which part of the body did it show up first? 8) is he on any supplements and medications? 9) are you on any medication that has been prescribed recently , before the rashes appeared? Insect bites usually have a bite mark in the centre and it is possible to develop a rash through out the body, however, blisters are unlikely. his symptoms point more toward a varicella virus infection ( chicken pox). children and the elderly and especially prone to this due to the reduced immunity (this is normal and expected). I recommend that you show his pediatrician again to rule out chicken pox or other infectious causes. in the meantime, avoid synthetic clothing. use cotton or fabric that breathes and allows circulation. monitor you child s temperature, food and water intake, urine output and stool frequency and consistency. please continue to breast feed if you do so ( that is the best thing you can do for your baby- unless you are taking medications that are contra indicated during breast feeding). Do not apply harsh soap or creams on him, just water will do. if necessary use very mild soap. Avoid tight fitting clothes or those that have elastic bands. If he develops a fever, has markedly reduced intake, cries out of the ordinary and incessantly, reduced urine output, fever more than two days or that won t go down with medicines and tepid sponging , difficult to wake from sleep or seems too sleepy, take him to the ER right away. I am trying to let you know what to aware of and what may be expected I case it is chicken pox or other infectious causes. Chicken pox is usually a mild disease in children that passes off without any problems in 2-3 weeks. only a small percent may develop a severe illness. Insect bites can be avoided by making sure his sleep and play area are not in any corners or touching any walls. changes or spread his sheets regularly and ensure nothing is hiding in them. Bed bugs need to be taken care of by exterminators. keep the house well ventilated and allow sunlight in. clean the filters of the air conditioner / humidifier regularly. do not store used clothes in closed rooms /bedrooms. (one of the favorite places for mosquitoes to hide). while outdoors use insect repellents on his clothing or a net that covers his crib. if the weather is suitable, keep him fully covered, check his car seat , stroller and crib every time you put him in. Hope this helps. please let us know if you have any further queries. wish you both good health