she is only a few weeks old i think(or month) and she has scabby and itchy ears. the scabs are int he inside, but not too bad. the scabs are right in front of her ear on one side and it is really bad from scratching it so much. she also has hair missing behind her ear but that could be from another guinea pig. one more thing, she has a big red bump on one side behind her ear. does anyone have any idea what i can do to help? thanks