Itchy hands touched yam, mainly because of contact dermatitis caused by allergy to yam, often need to be taken according to the condition of the general treatment, topical medication, oral medication, etc. to alleviate. 1. General treatment: hands touching the yam after the itchy symptoms, should be timely use of water to clean the hands of yam, avoid touching the yam again, avoid scratching and so on. 2. local medication: if the hand itching is more serious, you can use glycerine lotion coated, to play the role of astringent, anti-itching; can also be used under the guidance of the doctor glucocorticoid cream, such as hydrocortisone cream, mometasone furoate cream, and so on. 3. Oral medication: patients can also take oral antihistamines under the guidance of a doctor, such as cetirizine hydrochloride, loratadine, etc.. It is recommended that the hand touched the itchy yam patients to the regular hospital in a timely manner, in accordance with the doctor’s instructions standardized treatment, the above drugs need to be used under the guidance of a doctor, the patient can not be arbitrary use of medication.