Itching around the waist is considered the following diseases: 1, contact dermatitis, mainly due to contact with chemical fiber pants or wear metal jewelry allergies, causing the corresponding allergic reactions; 2, scabies, due to scabies infection caused by an infectious disease; 3, shingles, usually occurs unilaterally on the waist appears flaky erythema, which has clusters of small blisters, accompanied by a certain itching sensation. After a few days the itching can turn into pain, caused by the varicella-zoster virus infection, which usually occurs when the virus infection is caused by staying up late, resting and sleeping poorly or by a decrease in immunity due to stress and tension.