Abstract

“It’s probably just your age.”
“The tests didn’t show anything abnormal.”
Many people are left struggling with persistent, unexplained symptoms after hearing these words. They may tire easily, suffer from a lingering cough, feel tightness in their throat, develop hives, or suddenly feel unwell in certain places. In many cases, the underlying cause may be an allergy.
Written by a specialist in respiratory medicine and allergies, this book explores surprising cases in which seemingly ordinary things turn out to be the cause of allergic reactions. It helps readers recognize possible connections between their unexplained symptoms and allergies, while providing clear, practical information about different types of allergies, warning signs, which medical specialists to consult, what tests may be available, and what to look out for in everyday life.
The book also examines a number of unexpected allergies that may affect adults, including food-dependent exercise-induced anaphylaxis, beer allergy, natto allergy, allergies to red-colored foods, as well as allergies to painkillers and contrast media used in medical imaging.
For anyone struggling with unexplained health problems, this book offers an essential guide to understanding the hidden causes behind seemingly ordinary symptoms.

Author’s Information

Allergist and Allergy Specialist
Associate Professor, Division of Respiratory Medicine and Allergology, Department of Internal Medicine, School of Medicine, Showa Medical University
Associate Professor, Department of Medical Education, School of Medicine, Showa Medical University
His areas of expertise include food allergies in adolescents and adults, Anisakis allergy, anaphylaxis, drug allergies, occupational health, gastrointestinal allergies in adolescents and adults, eosinophilic gastrointestinal disorders, asthma, and respiratory diseases.
Career
2001 — Graduated from the School of Medicine, Showa Medical University
2015 — Visiting Researcher, Krefting Research Centre, University of Gothenburg, Sweden
2017 — Lecturer, Division of Respiratory Medicine and Allergology, Department of Internal Medicine, School of Medicine, Showa Medical University
2022 — Associate Professor, Division of Respiratory Medicine and Allergology, Department of Internal Medicine, School of Medicine, Showa Medical University
2024 — Associate Professor, Department of Medical Education, School of Medicine, Showa Medical University
2026 — Present