Respected dr sir..my mom is suffering from dry cough for one month Respected dr sir..my mom is suffering from dry cough for more than one month .. she says she is not having even slight phlegm .just dry continous cough..she has cough only when she is lying down..cough comes continously..other wise she is very normal..consulted doctor and took cough syrups but not effective sir.. since one month she is feeling difficult to lie down and sleep ..her sleep is very disturbed..i am very worried sir.. this is the first time in her life she i s getting cough like this..she says there is tickling and irriation in throat ..she feels that inner tongue has elongated and touching the throat .. sir please telll your expert opinion and explain wat is her problem and solution to it sir..please..