Anaphylaxis

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Autoimmune Clinical reference

Anaphylaxis

Anaphylaxis: severe life-threatening systemic hypersensitivity reaction. Triggers: foods (nuts, shellfish), medications (penicillin, NSAIDs), stings. Epinephrine IM is first-line — never delay for antihistamines.

anaphylaxis anaphylactic shock severe allergic reaction anaphylactoid
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Core official overview

What this condition is

Anaphylaxis is a serious allergic reaction. It can begin very quickly, and symptoms may be life-threatening. The most common causes are reactions to foods (especially peanuts), medications, and stinging insects. Other causes include exercise and exposure to latex. Sometimes no cause can be found.It can affect many organs:Skin - itching, hives, redness, swellingNose - sneezing, stuffy nose, runny noseMouth - itching,…

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Common tests

Tests performed

Serum tryptase (peak 1-2h post-reaction) CBC BMP Specific IgE testing (follow-up) Skin prick testing (follow-up)
Common medications

Recognize the drug and the class

EPINEPHRINE 0.3-0.5mg IM (anterolateral thigh) — FIRST LINE IV fluids (hypotension) Diphenhydramine 25-50mg IV (adjunct — NOT first-line) Ranitidine H2 blocker (adjunct) Bronchodilator: Albuterol (bronchospasm) Corticosteroids (prevent biphasic — secondary) Prescribe Epi-Pen for discharge
Related nursing diagnoses

NANDA diagnoses & care plans

Use these direct links to open nursing diagnoses and care-plan support related to Anaphylaxis.

Decreased Cardiac Output Impaired Gas Exchange Anxiety Fear Deficient Knowledge
Official education links

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Anaphylaxis Anaphylaxis is a serious allergic reaction. It can begin very quickly, and symptoms may be life-threatening. The most common causes are reactions to foods (especially peanuts), medications, and stinging insects. Other causes include exercise and exposure to latex. Sometimes no cause can be found.It can affect many organs:Skin - itching, hives, redness, swellingNose - sneezing, stuffy nose, runny noseMouth - itching,… Shock Shock happens when not enough blood and oxygen can get to your organs and tissues. It causes very low blood pressure and may be life-threatening. It often happens along with a serious injury. There are several kinds of shock. Hypovolemic shock happens when you lose a lot of blood or fluids. Causes include internal or external bleeding, dehydration, burns, and severe vomiting and/or diarrhea. Septic shock is caused b… Mosquito Bites Mosquitoes are insects that live all over the world. There are thousands of different species of mosquitoes; about 200 of those live in the United States.Female mosquitoes bite animals and humans and drink a very small amount of their blood. They need protein and iron from blood to produce eggs. After drinking blood, they find some standing water and lay their eggs in it. The eggs hatch into larvae, then pupae, and… Insect Bites and Stings Most insect bites are harmless, though they sometimes cause discomfort. Bee, wasp, and hornet stings and fire ant bites usually hurt. Mosquito and flea bites usually itch. Insects can also spread diseases. In the United States, some mosquitoes spread West Nile virus. Travelers outside the United States may be at risk for malaria and other infections. To prevent insect bites and their complications:Don't bother insec…