<s>[INST] hi there i went to tenerife last july and the night i got home i had a strange fit like attack.i did not pass out but think i was close.since i came back off holiday i had had lots of weird things like shortness of breathe and a rapid heart beat.i havent had no more fit attack things recently but i keep getting a massive ache in my left arm every few days and get a strange coldness in my chest and left arm and cant really tell if the coldness felling hurts.i have been to my doctors and had blood tests but they said they came back ok.i havent had my bcg needle and really dont know what it is thats making me feel like this.help?? [/INST] HIWell come to HCMI really appreciate your concern, I had gone through the history given here, the symptoms that is being stated here may be due to several condition but the most important is to rule out the cardiac ischemia, if this is negative then it is nothing to worry.Beside the cardiac disease the symptoms of shortness breath, sudden palpitation, chest pain, could be due to allergic condition that related with the pulmonary tissues, it could be due to acid peptic disease, it may be due to anxiety and depression.You have not mentioned the age and gender here, else something better could have been advised.I would advise to try The PPI (Omeprazole 40 mg once in day) hope this information helps. </s>