Suggest Treatment For Small Blisters On Face, Arms And Legs

Hi, I have recently been bitten numerous times by an unknown assailant. These bites started off as small blisters, but then turned into large scabs. They are covering my face, arms and legs and are really uncomfortable, do you have any idea what might be causing this? Also, if you could suggest something that could reduce the appearance of the scabs that would be great.