Allergy to onion is very rare. It is rarely a cause of allergic contact dermatitis and urticaria.
There is no information on syndromes associated with onion allergy.
Onion is in the Alliaceae plant family, other plants in this family are chives, leeks and garlic. If your allergy is severe these plants may also cause allergic reactions.
DermNet NZ - Onion
Allergen Encyclopedia - Onion
Healthline - Am I Allergic to Onions?
Anaphylaxis Campaign - Onion and Garlic Allergy
Dermnet NZ - Onion
Articles and Journals
Pru p 3 oral immunotherapy efficacy, induced immunological changes and quality of life improvement in patients with LTP syndrome, 2020
Allergic hypersensitivity to garlic and onion in children and adults, 2020
Garlic and onion sensitization among Saudi patients screened for food allergy: A hospital based study, 2013
Involvement of Lipid Transfer Protein in onion allergy, 2007
A case of onion allergy, 2001
Bronchial asthma, rhinoconjunctivitis, and contact dermatitis caused by onion, 1994
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