I get this recurring cough about 3 times a year. Always with phlegm, sometimes with blood (rarely). No other symptoms. I'm 21 and don't smoke.

Don't know cause. Mix hot water, 1 tsp. lemon juice & 1 tsp. honey in a mug, then add more lemon juice or honey to taste, if desired. Sip the mixture slowly and inhale the steam from the hot liquid to help reduce congestion in the chest. Or make tea with 2 tsp of Marshmallow root bark per 1cup of hot water (steep in a covered pot for at least 5 minutes). Drink several times a day or as needed to relieve coughing.