You can get a skin infection called impetigo if you scratch them so much that you make them bleed. I know you can't help it. try putting some hydrocortisone cream on them. I believe they actually have some out there now with an antibiotic ointment mixed with it. If not then alternate the hydrocortisone cream with some neosporin. If it is really getting red and inflamed then you may already have the skin infection and you need to go ahead and see a doctor,
Now, how to prevent it from happening again. I know this works on my daughter who gets eaten alive by mosquito's if she doesn't follow this regime. Take the daily recommended dose of Thiamine which is B1 vitamin. You can buy it at any local walmart,cvc,etc. Second, get some "skin so soft " from Avon. and keep it rubbed on your skin. It may not work for you but I swear by it for my daughter and her grandmother has the same problem and she goes camping every weekend and has no problems because she never misses a dose of thiamine and she uses her skin so soft daily. I hope this helps you too!!!!!
nurse and life