I am a 73yr old female taking no prescription medicines, active and in good health. 3 weeks ago, a rash started on my chest just above my breast and left to right. As the days went by, the rash traveled upward. It is now about 3 inches high and goes all the way around my neck, with the bask of the neck being a 1/2 inch width. I have a dermatologist but have been away from CO visiting daughter and family in DE. Could it be from stress or should I seek medical treatment? I have had the Shingles vaccine about 3 yrs ago. Just using Eucerin during the last week to help with the itching and soreness. Thank you for your help. I was surprised to find this assistance as I just searched for probable causes. Ellen Redding I will make an apt with my Dermatoligist, since I did not realize there was a cost for advice. thank you for your time. Ellen Redding