Itchy caterpillar allergy skin is also known as atopic dermatitis. Treatment includes isolation of allergens and medication. 1. Isolation of allergens: clear allergens, such as caterpillars, or pollen, pets, dogs and cats, patients should take the initiative to consciously avoid contact with these allergens, you can relieve the itchy feeling, and the skin gradually return to normal. 2.Medication (1) Mild cases: Mild cases can take oral anti-allergy drugs, such as loratadine or chlorpheniramine. Loratadine should not be used for a long time, more than one month should be replaced by other drugs to avoid drug resistance. (2) Severe cases: glucocorticosteroids, such as prednisone or dexamethasone, and hydrocortisone, should be applied promptly. Glucocorticosteroids should not be used for a long period of time to avoid causing osteoporosis. If the above symptoms occur, you should consult a doctor in time and standardize the use of medication under the doctor’s guidance.