Under these circumstances, medical attention is needed. For more information on the complications of asthma, please see the Asthma section of this web site. Anaphylaxis Anaphylaxis is the most serious allergic reaction. Signs and symptoms of this condition usually start within seconds to minutes after exposure to the allergen, but they can be delayed as long as two hours. As symptoms progress, the person will complain of feeling a lump in the throat, tightness and difficulty swallowing, tightness of the chest, and wheezing or shortness of breath.
Medical treatment is needed immediately.
One example is a quick injection device known as an Epipen , which is available for use in emergencies. Inc. All Rights Reserved.