My child is 8 and her teeth are deformed by thumb sucking. Also she picks up worms from school more than any other child I know. Recently she has had a serious infection where the worms entered her urethra and climbed up to her lungs and caused her to have a cough and terrible discomfort when she frequently went to the toilet. Believe me when I say I have cleaned the house,bedlinen, used Ovex on the family etc. What I haven't tried is to wean her off her thumb sucking. I have bought a thumb guard today and will try. I have asked her why she sucks her thumb and she replies 'it makes her calm and relax'. What can she do to help her be less stressed and calmer? DO I have to take away her loved teddy because she always sucks her thumb while stroking him?