Case Study 3 - Slide 4

Farley's symptoms could be caused by a serum sickness-like reaction due to his allergy to amoxicillin related to cephalaxin. Another possible problem is histamine toxicity from recent fish consumption and improper storage, which can cause rash and swelling. Lastly, a food allergy or anaphylaxis could be causing sudden onset symptoms post-eating, including rash, swelling, and breathing difficulty, even though he doesn't have any known food allergies. What are three possible problems that could have caused Farley's symptoms? Serum sickness-like reaction. History of allergy to amoxicillin related to cephalaxin, antibiotic currently taking. Rash developed previously with amoxicillin, resolved after discontinuation. Cephalaxin can trigger similar immune responses. Typical onset one to two weeks after exposure. Symptoms include rash, fever, joint pain. Histamine toxicity. Recent fish consumption and improper storage. Bacteria in fish can convert histidine to histamine. Symptoms mimic allergic reactions. Rash and swelling. Food allergy or anaphylaxis. Sudden onset of symptoms post-eating, rash, swelling, breathing difficulty. No known food allergies, but possible new allergy developments.