Hi I have had itching on my back and arms for the past six months it started on the back no rash but scratching made marks,then it came on the inner part of the arms,I am scratching so much it has left terrible dark spotd which are still very itchy,been to Dr nohelp with the creams and allergy pills.I am so tired from no sleep ,gets worse at night please help,don t know what else to do. janaki