Sudden itchy scratching may be pruritus, urticaria, eczema and other diseases, need to choose drugs, physical and other methods of treatment. 1. Pruritus: dry skin, sudden changes in temperature and other causes of itchy skin, but there is no primary lesions, resulting in a sudden itchy body more and more itchy, accompanied by a burning sensation. You can take isoprinosine hydrochloride tablets, cetirizine hydrochloride tablets and other drugs, can relieve itching. 2. Urticaria: Considering that eating certain allergic drugs or food triggered, the patient’s skin will appear in different sizes, but also cause a sudden itch all over the body more and more itchy scratching. Need to follow the doctor’s advice to take loratadine tablets, olopatadine hydrochloride tablets and so on. If it is chronic urticaria, you can also try phototherapy. 3. Eczema: Considering the mental stress, immune imbalance caused by the skin red pimples, suddenly itchy body more and more itchy scratching. You can follow the doctor’s instructions to apply mometasone furoate cream, tretinoin acetate cream and other drugs, can play a role in stopping the itching and anti-inflammatory effect. Suddenly itchy scratch more itchy can also be seen in ringworm, scabies, etc., the patient needs to go to the hospital in time, according to the cause of the onset of the choice of treatment methods, do not choose their own medicine.