Asthma attack while running?

I am an extremely active person and have never had this problem before. I  am currently a member in school track and am running everyday afterschool so I'm not out of shape. Today I went on a long run with my brother. My legs were feeling good and so was my system but close to the end of our run I began hyperventalating and my throat swelled up and I could not breath. I walked till it stopped but when we tried to run it started up again. I have never had this happen before but lately my breathing has not felt as good as it was last year when I was running. I am also recovering from bulimia but have not done any bingeing and purging for 5 weeks but I am still a little bit underweight.

Does anyone know if this could be related to allergies, asthma, or lung disease? Any information helps, thanks :)


Other symptoms:
- Purple fingernails
- Always cold
- Anxiety
- Trouble with breathing deeply
- Headache (after the wierd asthma like attack)

[Tammy2009]

There are many causes, vitamin defiencies, asthma, heart problems, allergies, anxiety.  Too many to narrow it down with just symptoms.  

You need to go see your doctor, have some tests to figure out what is going out.  Since you have an eating disorder, you may be defiency in one or many vitamins which can cause many symptoms that you describe.  Allergies and asthma are possibilities but can not be the cause of all the symptoms.  Thyroid problems are also a possibility.  

Good luck and let us know the test results.