<s>[INST] Hello. I have this issue where all of a sudden I will feel like I can t breathe (almost like an anxiety attack), so I make this noise from the back of my throat and open my mouth to open my airway. These periods can last anywhere from a few minutes to a few hours. It really bothers and stresses me and I would like to know what s wrong. Could you help me? Thank you! [/INST] You should get pulmonary function test ( a breathing test) to fing if there is constriction of airways which is causing this problem..I would opine you to visit a chest physician regarding the same.. </s>