PMID- 36581536 OWN - NLM STAT- MEDLINE DCOM- 20230717 LR - 20230718 IS - 1879-1476 (Electronic) IS - 0385-8146 (Linking) VI - 50 IP - 5 DP - 2023 Oct TI - Omalizumab is effective for a patient with pollen-food allergy syndrome who experienced intractable lip edema. PG - 805-810 LID - S0385-8146(22)00229-2 [pii] LID - 10.1016/j.anl.2022.12.001 [doi] AB - Pollen-food allergy syndrome (PFAS) is an immunoglobulin E (IgE)-mediated allergic reaction caused when patients with pollen allergy ingest food having cross-reactivity with pollen. To date, no effective treatment method for this has been established. Here we report the case of a patient with PFAS who experienced lip edema, causing difficulties in treatment. This report describes the case of a 12-year-old boy with perennial allergic rhinitis since the age of 8 years. After ingesting fresh fruits and raw vegetables at the age of 11 years, he started to experience lip edema repeatedly. Thus, the patient was referred to our department. Based on the results of serum antigen-specific IgE, prick-to-prick, and allergen component tests, he was diagnosed with PFAS. He has been instructed to avoid causative food. Furthermore, the treatment using an antihistamine and antileukotriene receptor antagonist was initiated for pollen allergy. Sublingual immunotherapy (SLIT) for Japanese cedar pollen was initiated because the patient experienced severe nasal allergy symptoms during the dispersal season of this pollen. These treatments alleviated the nasal symptoms; however, the lip edema persisted. Omalizumab administration improved the lip edema. The combination of SLIT and omalizumab may be an effective treatment option for patients with PFAS. CI - Copyright (c) 2022 Japanese Society of Otorhinolaryngology-Head and Neck Surgery, Inc. Published by Elsevier B.V. All rights reserved. FAU - Sakamoto, Daiki AU - Sakamoto D AD - Department of Otorhinolaryngology, Head and neck surgery, Kansai Medical University, Osaka, Japan. FAU - Hamada, Satoko AU - Hamada S AD - Department of Otorhinolaryngology, Head and neck surgery, Kansai Medical University, Osaka, Japan; Allergy center, Kansai Medical University, Osaka, Japan. Electronic address: hamadas@kouri.kmu.ac.jp. FAU - Kobayashi, Yoshiki AU - Kobayashi Y AD - Department of Otorhinolaryngology, Head and neck surgery, Kansai Medical University, Osaka, Japan; Allergy center, Kansai Medical University, Osaka, Japan. FAU - Shimono, Masami AU - Shimono M AD - Department of Otorhinolaryngology, Head and neck surgery, Kansai Medical University, Osaka, Japan. FAU - Shimamura, Akihiro AU - Shimamura A AD - Department of Otorhinolaryngology, Head and neck surgery, Kansai Medical University, Osaka, Japan. FAU - Kanda, Akira AU - Kanda A AD - Department of Otorhinolaryngology, Head and neck surgery, Kansai Medical University, Osaka, Japan; Allergy center, Kansai Medical University, Osaka, Japan. FAU - Asako, Mikiya AU - Asako M AD - Department of Otorhinolaryngology, Head and neck surgery, Kansai Medical University, Osaka, Japan; Allergy center, Kansai Medical University, Osaka, Japan. FAU - Iwai, Hiroshi AU - Iwai H AD - Department of Otorhinolaryngology, Head and neck surgery, Kansai Medical University, Osaka, Japan. LA - eng PT - Case Reports DEP - 20221227 PL - Netherlands TA - Auris Nasus Larynx JT - Auris, nasus, larynx JID - 7708170 RN - 2P471X1Z11 (Omalizumab) RN - 0 (Allergens) RN - 37341-29-0 (Immunoglobulin E) RN - 0 (Fluorocarbons) SB - IM MH - Male MH - Humans MH - Child MH - *Rhinitis, Allergic, Seasonal/complications/drug therapy MH - Omalizumab/therapeutic use MH - Lip MH - Pollen MH - Allergens MH - *Food Hypersensitivity/complications/drug therapy MH - Syndrome MH - Immunoglobulin E MH - *Angioedema MH - Edema/etiology/therapy MH - *Fluorocarbons OTO - NOTNLM OT - Allergic rhinitis OT - Omalizumab OT - Pollen-food allergy syndrome (PFAS) OT - Sublingual immunotherapy (SLIT) COIS- Declaration of Competing Interest The authors have no conflicts of interest to declare. EDAT- 2022/12/30 06:00 MHDA- 2023/07/17 06:42 CRDT- 2022/12/29 21:56 PHST- 2022/06/18 00:00 [received] PHST- 2022/11/18 00:00 [revised] PHST- 2022/12/02 00:00 [accepted] PHST- 2023/07/17 06:42 [medline] PHST- 2022/12/30 06:00 [pubmed] PHST- 2022/12/29 21:56 [entrez] AID - S0385-8146(22)00229-2 [pii] AID - 10.1016/j.anl.2022.12.001 [doi] PST - ppublish SO - Auris Nasus Larynx. 2023 Oct;50(5):805-810. doi: 10.1016/j.anl.2022.12.001. Epub 2022 Dec 27.