what is the basis for all the symptoms associated with an allergic reaction
Main allergy symptoms. Common symptoms of an allergic reaction include: sneezing and an itchy, runny or blocked nose (allergic rhinitis) itchy, red, watering eyes (conjunctivitis) wheezing, chest tightness, shortness of breath and a cough. a raised, itchy, red rash (hives) swollen lips, tongue, eyes or face.
Common symptoms of an allergic reaction include: 1  sneezing and an itchy, runny or blocked nose (allergic rhinitis) 2  itchy, red, watering eyes (conjunctivitis) 3  wheezing, chest tightness, shortness of breath and a cough.  a raised, itchy, red rash 1  (hives) swollen lips, tongue, eyes or face.  tummy pain, feeling sick, vomiting or diarrhoea.
Food allergies can present with respiratory symptoms in addition to symptoms, such as swelling of the throat, mouth, and lips, shortness of breath, abdominal pain, and nausea, vomiting, and diarrhea. Asthma often goes hand-in-hand with having an allergic reaction.
Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to something in the environment that usually causes little or no problem in most people. These diseases include hay fever, food allergies, atopic dermatitis, allergic asthma, and anaphylaxis.
Red, itchy, possibly raised blotches on the skin that often result from an allergic reaction. Hives. A severe or life-threatening allergic reaction in which the blood vessels dilate, causing a drop in blood pressure, and the tissue lining the respiratory system swell, interfering with the airway. Anaphylaxis.