question: i have an intermittant tingling in my upper back area, seems to be in my left lung.  nothing i do seems to trigger it.  it just comes and goes.  i was diagnosed with bronchitis about a month 1/2 ago and was diagnosed with pneumonia about 5 months ago.  I also had a kidney stone about 4 months ago.  I have been a light smoker for 8 years, but I also stay physically fit.  I also chew tobacco, but not on a regular basis.  I am 38 years old.