Jellyfish collagen: a new allergen in the beach.

Jellyfish stings are a common event in seas worldwide with an estimated 150 million envenomations annually, usually results in acute cutaneous inflammation but some allergic reactions are also documented.1 Usually the allergy manifests with rashes, erythema, and pruritus and in some cases with even more severe reactions as anaphylasis. Among jellyfish (considering Scyphozoa, Cubozoa and the siphonophore Portuguese man o'war) there are different species, some of them very dangerous; their sting can lead to severe injuries and even death of the individual, mainly from Cubozoa and Siphonophora.

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