what serious illness can cause tickle in throat
A throat tickle can be caused by a wide variety of things. Sometimes a tickling, scratchy throat can indicate the onset of a cold. Allergies to foods or food additives, and environmental allergies to smoke, dust mites, mold, or pollen, can result in an itchy, tickling throat. Post-nasal drip or a dry throat can irritate the throat and cause a tickle.
Without running to conclusion, throat and lung cancer can be the cause for the tickle in throat and the persistent coughing. You need to have a professional heath care provider diagnose the condition to be sure the cause is cancer before treatment can commence.