Suggest Treatment For Severe Itching All Over The Body

I M HIGHLY ALLERGIC TO PARTHENIUM WEED. SEVER ITCHING ON THE SKIN OF FACE ,NECK,ELBOW AND BEHIND THE KNEE FOR LAST 5 YEARS. I TOOK MANY ALLOPATHIC AND AYURVEDIC TREATMENT BUT GOT NO RELIEF. FINALLY A HOMEOPATHIC MEDICIN R84 HAS SHOWN A LITTLE EFFECT. IN MY SURROUNDING PARTHENIUM IS WROWING
EXTINSIVELY PLEASE SUGGEST ME BEETER CURE.