If you have an itchy body, you may have atopic dermatitis or pruritus. It is recommended that patients make a preliminary judgment based on the causative factors and accompanying symptoms, if necessary, seek medical clarification, and then take the appropriate treatment. 1, allergic dermatitis: patients may have symptoms of this itch and that itch on the body after contact with allergens, such as substandard clothing, mites, and hot and cold stimuli, etc., generally after the itch will be accompanied by a rash, mainly to remove the allergens, itching severe patients can use antihistamines, Glucocorticoids, common cetirizine, dexamethasone, etc., after active treatment, generally 1-2 weeks can be cured; 2. Pruritus: patients can show generalized pruritus, extending from one to the whole body, but no lesions are found in the pruritus, there may also be a burning sensation, more intense at night. It is usually treated clinically with drugs that have moisturizing and anti-itching effects, such as glycolic lotion and lidocaine cream. If the condition is more severe, cetirizine and vitamin B may be required. Patients should avoid frequent scratching of the skin to avoid breakage, contamination by sweat, external dust and other substances, and secondary infection. You can try to go to a cool and ventilated place, or change cotton clothes and observe whether the itching symptoms are relieved.