I itch often everyday for at least 6 mo.in middle of my back , and sometimes a little tingling feeling. no sore, or marks there. is this a symptom?

See a doctor: For a detailed history and physical exam. You're 64. Could be something simple or could be something concerning. Impossible to tell from a one liner description.

Dry skin: You may have dry skin which is a common cause of itchiness without a rash. Tingling may be a sign of nerve irritation and itching can be related to that as well. See your doc to discuss further work up and treatment.