im worried about my lucy... recently we discovered our cats had fleas so we purchased medicine for it (frontlines). we gave it to them and tommy seems to not be 'itching' so much anymore. but lucy is still doing it and "all the time" so it seems. especially her front arms. she wont stop attacking it and biting it and sadly bald spot is growing on her arms from biting and licking, biting and licking, constantly. i dont know why. i am worried about her. anyone know anything about this??? even i tried looking at her arms.. im not seeing any fleas (its white--- should be easy to spot black fleas) so i dont know why shes "attacking" her arms so furiously.