Hi thanks for asking question. Here first possibilies of allergic ashthma is to be rule out if associated breathlessness present with cough. Second it can be allergic acute bonchitis. Thirdly eosinophil get increased in parasitic infection also.filaria or ascaris like worm can lead to hypersensitivity lung reaction.albendazole use for ascaris worm. Hetrazan also useful drug for filaria and allergic condition. For ruling out whether it is obstructive or restrictive lung dz pulmonary function test done. So becoz yr condition has reccured it should be investigated to rule out cause. Finally green sputum can be becoz of pseudomonas infection that also ruled out if no other cause found by sputum culture. I hope my suggestion will you