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Monosodium glutamate and skin pathology in pediatric allergology
1Servicio de Alergia e Inmunologia Clínica, Hospital Infantil Valle de Hebron, Universidad Autonoma, Barcelona, Spain.
Insights
Monosodium glutamate (MSG) hypersensitivity can cause skin issues like urticaria in children. Oral provocation tests confirmed MSG as the cause in four out of five pediatric cases studied.
Area of Science:
- Pediatric Dermatology
- Allergy and Immunology
- Food Science
Background:
- Skin conditions such as urticaria and atopic dermatitis are common in children.
- Monosodium glutamate (MSG) is a widely used food additive with an unknown mechanism of action.
- Previous studies have not established a link between MSG and cutaneous hypersensitivity.
Purpose of the Study:
- To investigate the potential role of monosodium glutamate (MSG) hypersensitivity in pediatric skin conditions.
- To identify MSG as an etiological factor in children presenting with urticaria and/or atopic dermatitis.
Main Methods:
- Case study of five children with skin pathologies.
- Diagnostic evaluation including clinical history and physical examination.
- Oral provocation tests (OPT) using MSG in controlled doses (50 and 100 mg).
Main Results:
- Four out of five children showed positive reactions to MSG via OPT within two hours.
- The primary symptoms observed were urticaria, with two cases also experiencing angioedema.
- One child presented with a combination of atopic dermatitis and urticaria.
Conclusions:
- Monosodium glutamate (MSG) hypersensitivity is a potential cause of urticaria and other skin manifestations in children.
- This study provides evidence linking MSG to cutaneous symptoms, challenging previous assumptions.
- Further research is warranted to elucidate the mechanisms of MSG hypersensitivity and its clinical implications.
Abstract:
This study presents the cases of five children who consulted us because of skin pathology, in which a hypersensitivity to monosodium glutamate (MSG) was detected. In four children, the motive for consultation was urticaria; in two children, urticaria was accompanied by angioedema, while the fifth child presented with atopic dermatitis and urticaria. In the four cases of urticaria, the etiological diagnosis was probable drug allergy. The oral provocation test (OPT), carried out with monosodium glutamate (MSG) in opaque capsules containing 50 and 100 mgr., was positive in two hours in four of the five children. MSG's mechanism of action is unknown, and though its use is world-wide, no evidence of hypersensitivity with cutaneous symptomatology has been found in any of the studies carried out to date.