Itching on the back may be associated with a variety of skin diseases, such as skin allergies, urticaria, neurodermatitis, eczema, etc.; it may also be associated with mosquito bites. Itching on the back is a characteristic manifestation of a variety of dermatologic disorders, so the occurrence of a skin disorder needs to be considered first. Common causes include atopic dermatitis, urticaria, eczema, neurodermatitis, etc. The clinical manifestations of different types of skin diseases are also somewhat different, so it is necessary to combine the characteristic manifestations of different diseases to clarify their specific causes. In addition to skin diseases, back itching symptoms may also be related to mosquito bites, mosquito bites local skin can appear obvious redness, swelling, itching and other symptoms. Itchy back symptoms may also have other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, to give targeted treatment or treatment.