طفل عمره ١٥ شهراً بعد دقائق من لقاح، صار عنده طفح منتشر وتورم الشفتين وصفير وصعوبة تنفس، والنبض ١٧٠. ما أول دواء؟

Minutes after a vaccine, a 15-month-old develops widespread rash, lip swelling, wheeze and breathing difficulty; HR 170. What is the first drug?

1. An oral antihistamine and waiting
2. Oral steroids only
3. Intramuscular adrenaline in the thigh
4. Salbutamol inhaler alone

Answer: C) Intramuscular adrenaline in the thigh. Post-vaccine anaphylaxis is rare but an emergency. Weight-based IM adrenaline into the lateral thigh is first, followed by oxygen, fluids and other drugs.