Anaphylaxis is:

Anaphylaxis is:

• A. A mild skin rash
• B. A common cold symptom
• C. A drug-induced liver injury
• D. A severe type of allergic reaction involving systemic histamine release

Answer: (D)

Anaphylaxis is a severe, life-threatening allergic reaction caused by widespread release of histamine and other mediators from mast cells. It typically starts quickly after allergen exposure and can involve multiple body systems at once—skin (hives, flushing), airways (swelling, wheeze, throat tightness), and circulation (low blood pressure, dizziness). Because it can progress rapidly to airway obstruction and shock, it requires urgent medical care with epinephrine and rapid transport. The option that describes a severe allergic reaction involving systemic histamine release captures this dangerous, multi-system response, while a mild skin rash, a common cold symptom, or drug-induced liver injury describes less severe or unrelated conditions.

Anaphylaxis is a severe, life-threatening allergic reaction caused by widespread release of histamine and other mediators from mast cells. It typically starts quickly after allergen exposure and can involve multiple body systems at once—skin (hives, flushing), airways (swelling, wheeze, throat tightness), and circulation (low blood pressure, dizziness). Because it can progress rapidly to airway obstruction and shock, it requires urgent medical care with epinephrine and rapid transport. The option that describes a severe allergic reaction involving systemic histamine release captures this dangerous, multi-system response, while a mild skin rash, a common cold symptom, or drug-induced liver injury describes less severe or unrelated conditions.