<s>[INST] HivI am nabil.. I have experiences shortness of breath for 6 months. It is worsening at nights. It is episodic varied from 20 to 2 hrs for each episodes. Everyday I have about 2 to 3 attacks. Just 4 days ago I have very mild central chest pain non radiating. It is constant about 1 hour maybe. I don't usually have dizziness during the attacks. I just have experienced one attack of dizziness after mild shortness of breath. [/INST] i dont know your age if all tests are normal your heart is ok and ecg normal it is allergy initialy it starts like this and ultimately if neglected can increase in symptomps and time duration you can antiallergic singula 10 mg bd syp tossex 1/2 tsf hs syp gelusil i tsf bd you can continue as these have no side effects you wont have breathless ness take consultaion of allergeologist and get treted your allergies for permanent cure </s>