M.B.
Two thoughts -- there is a mom at church that has had her dry cough for 3-4 weeks now. It's annoying, but she's slowly getting over it. She's been eating/drinking ginger & it helps her stop coughing.
Another thought -- I've had a lingering, dry, annoying cough a couple of times. After weeks, I went into the doctor's office to find out that I've had a terrible sinus infection. After a nasal spray, Mucinex, and an antibiotic, it goes away.
I hope that helps!