My Mom Cough Everyday But Not Repeatedly Just Once Or Twice Ever Since When I Was Little, What Could It Be?

I would say it is normal for some, to clear the throat, if she has this at certain times of day, or in certain rooms, I would look for triggers, a dry room or dusty room, I would look into that before running to the doctor, if she is a smoker and or has a persistent cough I would worry more.

If she is having only cough but not frequent and no other problem like fever and sputum then reason of this occasional cough can be allergy. You have to note when she cough, what food or use of any material trigger her cough. If the conditions of her room are dry then it night cause irritation in throat leading to cough. If her coughing episode last for 2-3 minutes then you should visit a doctor.