Itchy body here and there may be physiological phenomenon, such as not pay attention to personal hygiene, may also be caused by certain diseases, such as atopic dermatitis, seborrheic dermatitis, and so on. 1. Physiological phenomenon: If you don’t pay attention to personal hygiene, don’t take a shower, don’t change your personal clothes in time, it may cause itchy body here and there. 2. Atopic dermatitis: a chronic inflammatory skin disease associated with genetic allergic qualities, manifested by itching, polymorphic lesions and a tendency to ooze, which can cause itchy here and there on the body. 3. seborrheic dermatitis: vitamin B deficiency, diet, alcoholism and other factors can affect the occurrence of this disease to varying degrees, accompanied by varying degrees of itching, can be recurrent, which can cause itchy body here and there itchy situation. Itchy everywhere on the body may also be caused by other reasons, excluding physiological reasons, if it has not been improved, should be timely medical examination, and then according to the cause of targeted treatment.