it started a week ago after having a bob martin flea treatment (no fleas, just routine drops behon back of neck, but has usually had frontline). If i can avoid taking her to the vet i want to as really could do without vet bill at moment, any advice ? she is up to date on immunisations, flea and worming treatment and is otherwise healthy. is there anything i can try over the weekend before giving in and taking her to the vets next week?