Which symptoms of anaphylaxis can be remembered using the mnemonic H.A.D.I.D.?

• A. Hives, Angioedema, Difficulty breathing, Itching, Decreased blood pressure
• B. Headache, Abdominal cramps, Diarrhea, Indigestion, Drowsiness
• C. Hunger, Acidity, Dry skin, Irregular heartbeats, Dizziness
• D. Hyperventilation, Abnormal heart rate, Dizziness, Inflammation, Drowsiness

Answer: (A)

The symptoms of anaphylaxis can indeed be remembered using the mnemonic H.A.D.I.D., where each letter corresponds to a specific symptom associated with a severe allergic reaction. The correct set of symptoms includes:

• Hives: Raised, itchy welts on the skin indicating an allergic reaction.

• Angioedema: Swelling that occurs under the skin, particularly around the eyes and lips, and sometimes the throat.

• Difficulty breathing: This symptom can manifest as wheezing, shortness of breath, or a feeling of tightness in the chest, all of which are critical indicators of anaphylactic shock affecting the respiratory system.

• Itching: This is often one of the earliest manifestations of an allergy, presenting with a sense of discomfort or irritation on the skin.

• Decreased blood pressure: This can occur due to vasodilation and fluid leakage from blood vessels, leading to a potentially life-threatening situation if not addressed promptly.

Recognizing these symptoms is essential in emergency situations, as anaphylaxis can progress rapidly. The mnemonic H.A.D.I.D. helps healthcare professionals and laypersons alike to quickly recall these signs, enabling them to take immediate action, such as administering epinephrine, which is crucial for reversing anaphylaxis.