Could That Rash Be A Contact Allergy?

January 28, 2018

 

 

Allergic Contact Dermatitis.

 

Allergic contact dermatitis is a skin condition in which direct contact with an allergen triggers a cell mediated allergic response and the development of localised itchy, red rashes on the skin.

 

It can often occur in people who already have existing eczema or dermatitis.

 

The skin allergy rashes typically present a few days after contact with the allergen and persist for as long as there is contact with the allergen.

 

It can take several weeks for rashes to disappear and the skin to heal after contact with the allergen ceases (ASCIA, 2015).

 

 

Common causes of contact dermatitis

 

- nickel eg. from jewellery
– chemicals in self care products, industrial products or cleaning products
– plants eg.  English Ivy, tomato, grevillea
– cosmetics
– perfumes
– ointments

 

 

Contact Patch Testing

 

Contact Patch Testing is commonly used to aid in the diagnosis of allergic contact dermatitis. The patch contains a number of allergens or haptogens which is placed in contact with the skin for 48 hours and then interpreted based on the degree of reaction.

 

 

At collective.care, we use the Australian Baseline Series (ABS 60) with chemotechnique diagnostics patch testing which can test for a large array of potential allergens.

 

 

Reference List:

Australasian Society of Clinical Immunology and Allergy [ASCIA]. 2015. Contact dermatitis. <Accessed 1 December, 2015: https://allergy.org.au/images/pcc/ASCIA_PCC_Contact_dermatitis_2015.pdf>

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