Some of the world’s commonest allergies are food allergies. Although there is a wide variety of different foodstuffs which can cause allergic reactions, including fish, cows’ milk and seafood, egg and peanut allergies are amongst the most widespread.
This is one of the reasons why DBV Technologies, based in Paris (www.dbv-technologies.com/en), decided to tackle these particular allergies. They have developed specific patches for both allergies, as well as for Cows’ Milk Protein Allergy (CMPA). Each patch has its own dedicated page, for example, more information on the hen’s egg allergy patch is available here: http://www.dbv-technologies.com/en/viaskin-products/viaskin-egg.
Although different patches treat different allergies, they all use the same basic mechanism of action. This involves targeting the Langerhans cells in the epidermis, as a way of activating the immune system without the allergens having to enter the bloodstream. As you can see below, the patches are very small and can be worn discreetly on the patient’s arm. The particular patches in this photograph are for treating peanut allergy. DBV Technologies are also working on ways of producing these patches in larger quantities, more quickly.