The itchy area of the back pain is considered to be caused by folliculitis, contact dermatitis, eczema, shingles and other diseases. 1. Folliculitis: the cause of folliculitis is related to bacterial infection, skin trauma, excessive sweating, shaving and other factors. Patients will experience itching, pain, fever and other symptoms. If folliculitis occurs in the waist, it can be manifested as itching in the place of waist pain. 2. Contact dermatitis: the cause of contact dermatitis is related to soap, cleaning and care products, antibiotic drugs and other factors. If contact dermatitis occurs in the waist, the patient manifests as pain, itching, edema, etc., appearing itchy place of waist pain. 3. Eczema: the itchy place of waist pain is also considered to be caused by eczema. The cause of eczema is not yet clear, may be related to genetics, immune abnormalities, changes in female hormone levels, diabetes and other factors. Patients will have itching, burning sensation, swelling, pain and other symptoms, manifested as itching in the place of back pain. 4. Herpes zoster: Herpes zoster may be caused by varicella-zoster virus infection. Patients may have pimples and blisters in the lower back with pain. There are many causes of itching in the area of back pain, and patients are advised to seek timely medical treatment so as to clarify the cause.