All about allergy

The symptoms of anaphylaxis can vary. In some people, the reaction begins very slowly, but in most the symptoms appear rapidly and abruptly.
The most severe and life-threatening symptoms are difficulty breathing and loss of consciousness.
Difficulty breathing is due to swelling and/or spasm in the airways (which can include swelling of the tongue or the airways). In very rare cases, breathing can stop altogether.
Loss of consciousness is due to dangerously low blood pressure, which is called “shock.”
In the most serious cases, the heart can stop pumping altogether.
These events can lead to death from anaphylaxis.
While some symptoms are life threatening, others are merely uncomfortable. Generally, a reaction must involve at least two different body systems, such as skin and heart, to be considered anaphylaxis.
Skin: Most anaphylactic reactions involve the skin.
Hives, welts, or wheals (raised bumps): Hives can cause severe itching
Generalized erythema (redness)
Swelling in the face, eyelids, lips, tongue, throat, hands, and feet
Breathing: Swelling of the surrounding tissues narrows the airways. 
Difficulty breathing, wheezing, chest tightness
Coughing, hoarseness
Nasal congestion, sneezing
Cardiovascular: Blood pressure may drop to dangerously low levels.
Rapid or irregular heart beat
Dizziness, faintness
Loss of consciousness, collapse
General
Tingling or sensation of warmth - Often the first symptom
Difficulty swallowing
Nausea, vomiting
Diarrhea, abdominal cramping, bloating
Anxiety, fear, feeling that you are going to die
Confusion

Allergy journal

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