I have had this condition for over 10 years and it progressivley gets worse. It starts as a heat rash over my neck,arms,trunk, and upper thighs. I can get this while sitting,standing, walking short distances, heat,humidity,cold,pressure,being excited, nervous, or stress. It is not brought on by any type of food. I do not have asthma symptoms. If I begin to notice the rash, I must sit down or remove myself from the environment causing it. If I can not, I begin to get hives in the same areas as the rash. My eyes, lips, ears, and throat begin to swell. Recently, after the birth of my son (by C-section), I have been getting severe cramps in my lower abdomen after the swelling has gone down on my face and throat. It is so severe I cannot stand, or sit. I get nausiated from the pain. I can only describe it as a very strong pressure. It feels like my insides are about to come out..to put it bluntly. Currently, I am on Allegra 180 bid, Singular, epi-pen as needed, hydroxadine to take as the symptoms occur. I am 27 and have gained over 100lbs over the years because my activity is limited. I need some answers so I can live a normal life..Please HELP.