My husband has had a constant throat tickle & chronic cough for over 3yrs. He has seen several Dr.'s,ENT,Allergy Spec.,Pulmonary Spec.he's had allergy tests,nasal scoping,breathing & lung tests,x-rays,blood work, etc.Dr's keep saying sinusitis,rhinitis & or chronic post nasal drip.He has had antibiotics,steroids,nasal sprays ,allergy meds,decongestants etc.,We have tried all sorts of OTC meds. He coughs up a clear mucus but not all the time.His cough subsides totally at night ,but the minute he gets up he coughs until he vomits many times ,it's worse when he gets overheated & stressed.He's started getting headaches & hurts in his ribs,I'm afraid this cough is creating other health problems. Can stress cause this constant cough like a nervous tick in addition to his already diagnosed condition that he can't find relief for.Can you please help with this exhausting condition,He is desperate to get some relief!