Swollen and itchy hands can be treated by physical methods, detachment from allergens and medication, as follows: First, physical methods: If the swelling and itchy hands are caused by frostbite, the patient should pay attention to keeping the hands warm, and at the same time elevate the affected limbs of the hands, so that the swelling will subside as soon as possible and the itchy symptoms will be significantly relieved after blood circulation is restored. Second, detach from allergens: If the swelling and itching of the hands are caused by allergies, the allergens, such as seafood and chili, should be removed, and the symptoms will be significantly relieved after detaching from the allergens. Third, medication: you can take drugs such as bephen and loratadine to fight against allergens, so that the patient’s clinical symptoms can be significantly relieved. Swollen and itchy hands should be diagnosed and treated promptly in order to get satisfactory control of clinical symptoms.