An anaphylactic reaction usually appears after the first exposure toan allergen, but will develop in the second expunere.Debutulreaction takes between 1 and 15 minutes from contact.Maiora.Simptomele rarely can occur in a range in intensity, but similarto each person.
Initially described itching, shortness of breath and hot flashes,rapidly evolved to the following symptoms:
cutanato-eye-erythema, urticaria, angioedema, pruritus, warmthand swelling
-respiratory: nasal congestion, rhinorrhea, dysphagia, wheezing,tachypnea, cough
-Cardiovascular: dizziness, weakness, syncope, chest pain,palpitations
-Digestive: nausea, diarrhea, cramps, bloating
-neurological headache and syncope.
If the allergen is food symptoms may occur in 2 hours.
The reaction is fatal unless immediate therapeutic intervention.
diagnosis
Anaphylaxis is diagnosed clinically based on acute exposure to an allergen followed by signs and symptoms.
If doubt some laboratory tests are indicated:
-quantification quantitative plasma histamine, urinary
the measurement of serum triptazei.
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