<s>[INST] my 10 soon to be 11 year old son has shortness of breath and has for several years.  We went to see a doctor about this some time ago and he did not want to lable my son as asmatic so he prescribed something for allergies.  I do not think my son has any allergy problems.  I had something similar when I was a kid.  Could this be anemia? [/INST] Dear, If doctor was not able to label him asthmatic, he must have done this on the basis of some test and chest findings. well, no doubt mild to medorate anemia also causes breathlessness , but on exertion, when you run or do something more than routine activity. You should get his HB test to clear the doubt. I recommend to have spirometry-lung funtion test to rule out asthma as well </s>