My father is in his mid 50 s, and has a persistent cough for the past 3-4 months. He has been to many doctors, and they said that he was recovering (2 months ago) from pneumonia , and that he developed bronchitis . He has been on many rounds of antibiotics , and still has the cough. He doesn t cough up anything most of the time, but he can not make it through a sentence without coughing. This morning he woke up with swollen ankles also. We have seen many doctors and he still suffers from this debilitating cough. Please help us.