Had chiropractor adjustment 2 weeks ago,back & neck. now have body wide steady mild tingle/itchy sensations.not localized but mainly scalp,feet,hands.no weakness, no loss sensation, no pain. did nerves just get irritated? will it heal & how long?

The adjustment wouldn't be the cause of diffuse body itching. One of the causes of widespread body itching without a rash is anxiety or stress. Dryness of the skin is another as is certain medications. Can you identify any of these triggers in your case? Stress management therapy can be helpful. Moisturizers & avoidance of excessive dry environment can be effective for dry skin. ?see dermatologis